diff --git a/src/main/java/com/noorq/casser/Example.java b/src/main/java/com/noorq/casser/Example.java
index 234043c..a21c971 100644
--- a/src/main/java/com/noorq/casser/Example.java
+++ b/src/main/java/com/noorq/casser/Example.java
@@ -43,12 +43,12 @@ public class Example {
 
 			@Override
 			public String name() {
-				return t.v1;
+				return t._1;
 			}
 
 			@Override
 			public Integer age() {
-				return t.v2;
+				return t._2;
 			}
 			
 		};
@@ -87,7 +87,7 @@ public class Example {
 		session.upsert(newUser);
 		
 		String nameAndAge = session.select(user::name, user::age).where(user::id, "==", 100L).sync().findFirst().map(t -> {
-			return t.v1 + ":" +  t.v2;
+			return t._1 + ":" +  t._2;
 		}).get();
 
 		User userTmp = session.select(user::name, user::age).where(user::id, "==", 100L).map(Example::mapUser).sync().findFirst().get();
diff --git a/src/main/java/com/noorq/casser/core/tuple/Tuple1.java b/src/main/java/com/noorq/casser/core/tuple/Tuple1.java
index 1d7710e..70435c0 100644
--- a/src/main/java/com/noorq/casser/core/tuple/Tuple1.java
+++ b/src/main/java/com/noorq/casser/core/tuple/Tuple1.java
@@ -22,15 +22,15 @@ import com.noorq.casser.core.reflect.CasserPropertyNode;
 import com.noorq.casser.mapping.CasserMappingProperty;
 import com.noorq.casser.mapping.value.ColumnValueProvider;
 
-public final class Tuple1<V1> {
+public final class Tuple1<A> {
 
-	public final V1 v1;
+	public final A _1;
 
-	public Tuple1(V1 v1) {
-		this.v1 = v1;
+	public Tuple1(A v1) {
+		this._1 = v1;
 	}
 
-	public final static class Mapper<V1> implements Function<Row, Tuple1<V1>> {
+	public final static class Mapper<A> implements Function<Row, Tuple1<A>> {
 
 		private final ColumnValueProvider provider;
 		private final CasserMappingProperty p1;
@@ -41,15 +41,15 @@ public final class Tuple1<V1> {
 		}
 		
 		@Override
-		public Tuple1<V1> apply(Row row) {
-			return new Tuple1<V1>(provider.getColumnValue(row, 0, p1));
+		public Tuple1<A> apply(Row row) {
+			return new Tuple1<A>(provider.getColumnValue(row, 0, p1));
 		}
 	}
 
 
 	@Override
 	public String toString() {
-		return "Tuple1 [v1=" + v1 + "]";
+		return "Tuple1 [_1=" + _1 + "]";
 	}
 	
 	
diff --git a/src/main/java/com/noorq/casser/core/tuple/Tuple2.java b/src/main/java/com/noorq/casser/core/tuple/Tuple2.java
index 1e1928e..ce56eae 100644
--- a/src/main/java/com/noorq/casser/core/tuple/Tuple2.java
+++ b/src/main/java/com/noorq/casser/core/tuple/Tuple2.java
@@ -22,17 +22,17 @@ import com.noorq.casser.core.reflect.CasserPropertyNode;
 import com.noorq.casser.mapping.CasserMappingProperty;
 import com.noorq.casser.mapping.value.ColumnValueProvider;
 
-public final class Tuple2<V1, V2> {
+public final class Tuple2<A, B> {
 
-	public final V1 v1;
-	public final V2 v2;
+	public final A _1;
+	public final B _2;
 
-	public Tuple2(V1 v1, V2 v2) {
-		this.v1 = v1;
-		this.v2 = v2;
+	public Tuple2(A v1, B v2) {
+		this._1 = v1;
+		this._2 = v2;
 	}
 
-	public final static class Mapper<V1, V2> implements Function<Row, Tuple2<V1, V2>> {
+	public final static class Mapper<A, B> implements Function<Row, Tuple2<A, B>> {
 
 		private final ColumnValueProvider provider;
 		private final CasserMappingProperty p1;
@@ -47,8 +47,8 @@ public final class Tuple2<V1, V2> {
 		}
 		
 		@Override
-		public Tuple2<V1, V2> apply(Row row) {
-			return new Tuple2<V1, V2>(
+		public Tuple2<A, B> apply(Row row) {
+			return new Tuple2<A, B>(
 					provider.getColumnValue(row, 0, p1), 
 					provider.getColumnValue(row, 1, p2));
 		}
@@ -56,7 +56,7 @@ public final class Tuple2<V1, V2> {
 
 	@Override
 	public String toString() {
-		return "Tuple2 [v1=" + v1 + ", v2=" + v2 + "]";
+		return "Tuple2 [_1=" + _1 + ", _2=" + _2 + "]";
 	}
 	
 	
diff --git a/src/main/java/com/noorq/casser/core/tuple/Tuple3.java b/src/main/java/com/noorq/casser/core/tuple/Tuple3.java
index 53a3ac9..eb0b9d7 100644
--- a/src/main/java/com/noorq/casser/core/tuple/Tuple3.java
+++ b/src/main/java/com/noorq/casser/core/tuple/Tuple3.java
@@ -22,19 +22,19 @@ import com.noorq.casser.core.reflect.CasserPropertyNode;
 import com.noorq.casser.mapping.CasserMappingProperty;
 import com.noorq.casser.mapping.value.ColumnValueProvider;
 
-public final class Tuple3<V1, V2, V3> {
+public final class Tuple3<A, B, C> {
 
-	public final V1 v1;
-	public final V2 v2;
-	public final V3 v3;
+	public final A _1;
+	public final B _2;
+	public final C _3;
 
-	public Tuple3(V1 v1, V2 v2, V3 v3) {
-		this.v1 = v1;
-		this.v2 = v2;
-		this.v3 = v3;
+	public Tuple3(A v1, B v2, C v3) {
+		this._1 = v1;
+		this._2 = v2;
+		this._3 = v3;
 	}
 	
-	public final static class Mapper<V1, V2, V3> implements Function<Row, Tuple3<V1, V2, V3>> {
+	public final static class Mapper<A, B, C> implements Function<Row, Tuple3<A, B, C>> {
 
 		private final ColumnValueProvider provider;
 		private final CasserMappingProperty p1;
@@ -52,8 +52,8 @@ public final class Tuple3<V1, V2, V3> {
 		}
 		
 		@Override
-		public Tuple3<V1, V2, V3> apply(Row row) {
-			return new Tuple3<V1, V2, V3>(
+		public Tuple3<A, B, C> apply(Row row) {
+			return new Tuple3<A, B, C>(
 					provider.getColumnValue(row, 0, p1), 
 					provider.getColumnValue(row, 1, p2),
 					provider.getColumnValue(row, 2, p3)
@@ -63,7 +63,7 @@ public final class Tuple3<V1, V2, V3> {
 
 	@Override
 	public String toString() {
-		return "Tuple3 [v1=" + v1 + ", v2=" + v2 + ", v3=" + v3 + "]";
+		return "Tuple3 [_1=" + _1 + ", _2=" + _2 + ", _3=" + _3 + "]";
 	}
 
 	
diff --git a/src/main/java/com/noorq/casser/core/tuple/Tuple4.java b/src/main/java/com/noorq/casser/core/tuple/Tuple4.java
index aed6918..72773fc 100644
--- a/src/main/java/com/noorq/casser/core/tuple/Tuple4.java
+++ b/src/main/java/com/noorq/casser/core/tuple/Tuple4.java
@@ -22,21 +22,21 @@ import com.noorq.casser.core.reflect.CasserPropertyNode;
 import com.noorq.casser.mapping.CasserMappingProperty;
 import com.noorq.casser.mapping.value.ColumnValueProvider;
 
-public final class Tuple4<V1, V2, V3, V4> {
+public final class Tuple4<A, B, C, D> {
 
-	public final V1 v1;
-	public final V2 v2;
-	public final V3 v3;
-	public final V4 v4;
+	public final A _1;
+	public final B _2;
+	public final C _3;
+	public final D _4;
 	
-	public Tuple4(V1 v1, V2 v2, V3 v3, V4 v4) {
-		this.v1 = v1;
-		this.v2 = v2;
-		this.v3 = v3;
-		this.v4 = v4;
+	public Tuple4(A v1, B v2, C v3, D v4) {
+		this._1 = v1;
+		this._2 = v2;
+		this._3 = v3;
+		this._4 = v4;
 	}
 	
-	public final static class Mapper<V1, V2, V3, V4> implements Function<Row, Tuple4<V1, V2, V3, V4>> {
+	public final static class Mapper<A, B, C, D> implements Function<Row, Tuple4<A, B, C, D>> {
 
 		private final ColumnValueProvider provider;
 		private final CasserMappingProperty p1;
@@ -58,8 +58,8 @@ public final class Tuple4<V1, V2, V3, V4> {
 		}
 		
 		@Override
-		public Tuple4<V1, V2, V3, V4> apply(Row row) {
-			return new Tuple4<V1, V2, V3, V4>(
+		public Tuple4<A, B, C, D> apply(Row row) {
+			return new Tuple4<A, B, C, D>(
 					provider.getColumnValue(row, 0, p1), 
 					provider.getColumnValue(row, 1, p2),
 					provider.getColumnValue(row, 2, p3),
@@ -70,7 +70,7 @@ public final class Tuple4<V1, V2, V3, V4> {
 
 	@Override
 	public String toString() {
-		return "Tuple4 [v1=" + v1 + ", v2=" + v2 + ", v3=" + v3 + ", v4=" + v4
+		return "Tuple4 [_1=" + _1 + ", _2=" + _2 + ", _3=" + _3 + ", _4=" + _4
 				+ "]";
 	}
 
diff --git a/src/main/java/com/noorq/casser/core/tuple/Tuple5.java b/src/main/java/com/noorq/casser/core/tuple/Tuple5.java
index 1aefaf7..8606246 100644
--- a/src/main/java/com/noorq/casser/core/tuple/Tuple5.java
+++ b/src/main/java/com/noorq/casser/core/tuple/Tuple5.java
@@ -22,23 +22,23 @@ import com.noorq.casser.core.reflect.CasserPropertyNode;
 import com.noorq.casser.mapping.CasserMappingProperty;
 import com.noorq.casser.mapping.value.ColumnValueProvider;
 
-public final class Tuple5<V1, V2, V3, V4, V5> {
+public final class Tuple5<A, B, C, D, E> {
 
-	public final V1 v1;
-	public final V2 v2;
-	public final V3 v3;
-	public final V4 v4;
-	public final V5 v5;
+	public final A _1;
+	public final B _2;
+	public final C _3;
+	public final D _4;
+	public final E _5;
 	
-	public Tuple5(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5) {
-		this.v1 = v1;
-		this.v2 = v2;
-		this.v3 = v3;
-		this.v4 = v4;
-		this.v5 = v5;
+	public Tuple5(A v1, B v2, C v3, D v4, E v5) {
+		this._1 = v1;
+		this._2 = v2;
+		this._3 = v3;
+		this._4 = v4;
+		this._5 = v5;
 	}
 	
-	public final static class Mapper<V1, V2, V3, V4, V5> implements Function<Row, Tuple5<V1, V2, V3, V4, V5>> {
+	public final static class Mapper<A, B, C, D, E> implements Function<Row, Tuple5<A, B, C, D, E>> {
 
 		private final ColumnValueProvider provider;
 		private final CasserMappingProperty p1, p2, p3, p4, p5;
@@ -59,8 +59,8 @@ public final class Tuple5<V1, V2, V3, V4, V5> {
 		}
 		
 		@Override
-		public Tuple5<V1, V2, V3, V4, V5> apply(Row row) {
-			return new Tuple5<V1, V2, V3, V4, V5>(
+		public Tuple5<A, B, C, D, E> apply(Row row) {
+			return new Tuple5<A, B, C, D, E>(
 					provider.getColumnValue(row, 0, p1), 
 					provider.getColumnValue(row, 1, p2),
 					provider.getColumnValue(row, 2, p3),
@@ -72,8 +72,8 @@ public final class Tuple5<V1, V2, V3, V4, V5> {
 
 	@Override
 	public String toString() {
-		return "Tuple5 [v1=" + v1 + ", v2=" + v2 + ", v3=" + v3 + ", v4=" + v4
-				+ ", v5=" + v5 + "]";
+		return "Tuple5 [_1=" + _1 + ", _2=" + _2 + ", _3=" + _3 + ", _4=" + _4
+				+ ", _5=" + _5 + "]";
 	}
 
 	
diff --git a/src/main/java/com/noorq/casser/core/tuple/Tuple6.java b/src/main/java/com/noorq/casser/core/tuple/Tuple6.java
index b8e53d5..21c7334 100644
--- a/src/main/java/com/noorq/casser/core/tuple/Tuple6.java
+++ b/src/main/java/com/noorq/casser/core/tuple/Tuple6.java
@@ -22,27 +22,27 @@ import com.noorq.casser.core.reflect.CasserPropertyNode;
 import com.noorq.casser.mapping.CasserMappingProperty;
 import com.noorq.casser.mapping.value.ColumnValueProvider;
 
-public final class Tuple6<V1, V2, V3, V4, V5, V6> {
+public final class Tuple6<A, B, C, D, E, F> {
 
-	public final V1 v1;
-	public final V2 v2;
-	public final V3 v3;
-	public final V4 v4;
-	public final V5 v5;
-	public final V6 v6;
+	public final A _1;
+	public final B _2;
+	public final C _3;
+	public final D _4;
+	public final E _5;
+	public final F _6;
 	
-	public Tuple6(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6) {
-		this.v1 = v1;
-		this.v2 = v2;
-		this.v3 = v3;
-		this.v4 = v4;
-		this.v5 = v5;
-		this.v6 = v6;
+	public Tuple6(A v1, B v2, C v3, D v4, E v5, F v6) {
+		this._1 = v1;
+		this._2 = v2;
+		this._3 = v3;
+		this._4 = v4;
+		this._5 = v5;
+		this._6 = v6;
 	}
 	
-	public final static class Mapper<V1, V2, V3, V4, V5, V6> implements 
+	public final static class Mapper<A, B, C, D, E, F> implements 
 		Function<Row, 
-		Tuple6<V1, V2, V3, V4, V5, V6>> {
+		Tuple6<A, B, C, D, E, F>> {
 
 		private final ColumnValueProvider provider;
 		private final CasserMappingProperty p1, p2, p3, p4, p5, p6;
@@ -65,8 +65,8 @@ public final class Tuple6<V1, V2, V3, V4, V5, V6> {
 		}
 		
 		@Override
-		public Tuple6<V1, V2, V3, V4, V5, V6> apply(Row row) {
-			return new Tuple6<V1, V2, V3, V4, V5, V6>(
+		public Tuple6<A, B, C, D, E, F> apply(Row row) {
+			return new Tuple6<A, B, C, D, E, F>(
 					provider.getColumnValue(row, 0, p1), 
 					provider.getColumnValue(row, 1, p2),
 					provider.getColumnValue(row, 2, p3),
@@ -79,8 +79,8 @@ public final class Tuple6<V1, V2, V3, V4, V5, V6> {
 
 	@Override
 	public String toString() {
-		return "Tuple6 [v1=" + v1 + ", v2=" + v2 + ", v3=" + v3 + ", v4=" + v4
-				+ ", v5=" + v5 + ", v6=" + v6 + "]";
+		return "Tuple6 [_1=" + _1 + ", _2=" + _2 + ", _3=" + _3 + ", _4=" + _4
+				+ ", _5=" + _5 + ", _6=" + _6 + "]";
 	}
 
 	
diff --git a/src/main/java/com/noorq/casser/core/tuple/Tuple7.java b/src/main/java/com/noorq/casser/core/tuple/Tuple7.java
index 91fda62..6468610 100644
--- a/src/main/java/com/noorq/casser/core/tuple/Tuple7.java
+++ b/src/main/java/com/noorq/casser/core/tuple/Tuple7.java
@@ -22,29 +22,29 @@ import com.noorq.casser.core.reflect.CasserPropertyNode;
 import com.noorq.casser.mapping.CasserMappingProperty;
 import com.noorq.casser.mapping.value.ColumnValueProvider;
 
-public final class Tuple7<V1, V2, V3, V4, V5, V6, V7> {
+public final class Tuple7<A, B, C, D, E, F, G> {
 
-	public final V1 v1;
-	public final V2 v2;
-	public final V3 v3;
-	public final V4 v4;
-	public final V5 v5;
-	public final V6 v6;
-	public final V7 v7;
+	public final A _1;
+	public final B _2;
+	public final C _3;
+	public final D _4;
+	public final E _5;
+	public final F _6;
+	public final G _7;
 	
-	public Tuple7(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7) {
-		this.v1 = v1;
-		this.v2 = v2;
-		this.v3 = v3;
-		this.v4 = v4;
-		this.v5 = v5;
-		this.v6 = v6;
-		this.v7 = v7;
+	public Tuple7(A v1, B v2, C v3, D v4, E v5, F v6, G v7) {
+		this._1 = v1;
+		this._2 = v2;
+		this._3 = v3;
+		this._4 = v4;
+		this._5 = v5;
+		this._6 = v6;
+		this._7 = v7;
 	}
 	
-	public final static class Mapper<V1, V2, V3, V4, V5, V6, V7> implements 
+	public final static class Mapper<A, B, C, D, E, F, G> implements 
 		Function<Row, 
-		Tuple7<V1, V2, V3, V4, V5, V6, V7>> {
+		Tuple7<A, B, C, D, E, F, G>> {
 
 		private final ColumnValueProvider provider;
 		private final CasserMappingProperty p1, p2, p3, p4, p5, p6, p7;
@@ -69,8 +69,8 @@ public final class Tuple7<V1, V2, V3, V4, V5, V6, V7> {
 		}
 		
 		@Override
-		public Tuple7<V1, V2, V3, V4, V5, V6, V7> apply(Row row) {
-			return new Tuple7<V1, V2, V3, V4, V5, V6, V7>(
+		public Tuple7<A, B, C, D, E, F, G> apply(Row row) {
+			return new Tuple7<A, B, C, D, E, F, G>(
 					provider.getColumnValue(row, 0, p1), 
 					provider.getColumnValue(row, 1, p2),
 					provider.getColumnValue(row, 2, p3),
@@ -84,8 +84,8 @@ public final class Tuple7<V1, V2, V3, V4, V5, V6, V7> {
 
 	@Override
 	public String toString() {
-		return "Tuple7 [v1=" + v1 + ", v2=" + v2 + ", v3=" + v3 + ", v4=" + v4
-				+ ", v5=" + v5 + ", v6=" + v6 + ", v7=" + v7 + "]";
+		return "Tuple7 [_1=" + _1 + ", _2=" + _2 + ", _3=" + _3 + ", _4=" + _4
+				+ ", _5=" + _5 + ", _6=" + _6 + ", _7=" + _7 + "]";
 	}
 
 	
diff --git a/src/test/java/com/noorq/casser/test/integration/core/compound/CompondKeyTest.java b/src/test/java/com/noorq/casser/test/integration/core/compound/CompondKeyTest.java
index f52b3a8..1a2cf59 100644
--- a/src/test/java/com/noorq/casser/test/integration/core/compound/CompondKeyTest.java
+++ b/src/test/java/com/noorq/casser/test/integration/core/compound/CompondKeyTest.java
@@ -97,9 +97,9 @@ public class CompondKeyTest extends AbstractEmbeddedCassandraTest {
 			
 			Date cd = d.get();
 			if (cd != null) {
-				Assert.assertTrue(cd.after(t.v2));
+				Assert.assertTrue(cd.after(t._2));
 			}
-			d.set(t.v2);
+			d.set(t._2);
 			
 			});
 		
diff --git a/src/test/java/com/noorq/casser/test/integration/core/simple/SimpleUserTest.java b/src/test/java/com/noorq/casser/test/integration/core/simple/SimpleUserTest.java
index a7896a8..a34e735 100644
--- a/src/test/java/com/noorq/casser/test/integration/core/simple/SimpleUserTest.java
+++ b/src/test/java/com/noorq/casser/test/integration/core/simple/SimpleUserTest.java
@@ -81,7 +81,7 @@ public class SimpleUserTest extends AbstractEmbeddedCassandraTest {
 
 		String name = session.select(user::name)
 				.where(user::id, "==", 123L)
-				.map(t -> "_" + t.v1)
+				.map(t -> "_" + t._1)
 				.sync()
 				.findFirst()
 				.get();