diff --git a/test/aud/exam/prep/DoubleListProvider.java b/test/aud/exam/prep/DoubleListProvider.java
new file mode 100644
index 0000000..99a2511
--- /dev/null
+++ b/test/aud/exam/prep/DoubleListProvider.java
@@ -0,0 +1,19 @@
+package aud.exam.prep;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.ArgumentsProvider;
+
+import java.util.stream.Stream;
+
+public class DoubleListProvider implements ArgumentsProvider {
+
+    @Override
+    public Stream<? extends Arguments> provideArguments(ExtensionContext extensionContext) {
+        return Stream
+            .generate(() ->
+                Arguments.of(Tests.randomList(), Tests.randomList()))
+            .limit(Tests.STEAM_SIZE);
+    }
+
+}
diff --git a/test/aud/exam/prep/ListProvider.java b/test/aud/exam/prep/ListProvider.java
index caafa3f..4bbe79f 100644
--- a/test/aud/exam/prep/ListProvider.java
+++ b/test/aud/exam/prep/ListProvider.java
@@ -4,8 +4,6 @@ import org.junit.jupiter.api.extension.ExtensionContext;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.ArgumentsProvider;
 
-import java.util.List;
-import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 public class ListProvider implements ArgumentsProvider {
@@ -13,16 +11,9 @@ public class ListProvider implements ArgumentsProvider {
     @Override
     public Stream<? extends Arguments> provideArguments(ExtensionContext extensionContext) {
         return Stream
-            .generate(this::randomList)
+            .generate(Tests::randomList)
             .map(Arguments::of)
             .limit(Tests.STEAM_SIZE);
     }
 
-    private List<Integer> randomList() {
-        var size = Tests.RANDOM.nextInt(50);
-        return Tests.RANDOM
-            .ints(size, 0, 100)
-            .boxed()
-            .collect(Collectors.toList());
-    }
 }
diff --git a/test/aud/exam/prep/Tests.java b/test/aud/exam/prep/Tests.java
index 360f829..08472b3 100644
--- a/test/aud/exam/prep/Tests.java
+++ b/test/aud/exam/prep/Tests.java
@@ -1,10 +1,20 @@
 package aud.exam.prep;
 
+import java.util.List;
 import java.util.Random;
+import java.util.stream.Collectors;
 
 public class Tests {
 
     public static final int STEAM_SIZE = 50;
 
     public static final Random RANDOM = new Random();
+
+    static List<Integer> randomList() {
+        var size = RANDOM.nextInt(50);
+        return RANDOM
+            .ints(size, 0, 100)
+            .boxed()
+            .collect(Collectors.toList());
+    }
 }