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diff --git a/testsuite/tests/arityanal/prim.hs b/testsuite/tests/arityanal/prim.hs
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+module Prim where
+
+map2 f [] = []
+map2 f (x:xs) = f x : map2 f xs
+
+zipWith2 f [] [] = []
+zipWith2 f (a:x) (b:y) = (f a b):zipWith2 f x y \ No newline at end of file