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diff --git a/Fractran/Example.hs b/Fractran/Example.hs
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+++ b/Fractran/Example.hs
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+module Example (
+    addition,
+    multiply,
+    prime2,
+    prime10short,
+    prime10) where
+
+-- some simple fractran programs
+
+-- input: 2^a * 3^b
+-- output: 3^(a+b)
+addition :: [(Int,Int)]
+addition = [(3,2)]
+
+-- input: 2^a * 3^b
+-- output: 5^ab
+multiply :: [(Int,Int)]
+multiply = [(13,21), (385,13), (1,7), (3,11), (7,2), (1,3)]
+
+-- input: 2
+-- output: a sequence containing all prime powers of 2
+prime2 :: [(Int,Int)]
+prime2 = [(17,91), (78,85), (19,51), (23,38), (29,33), (77,29), (95,23), (77,19), (1,17), (11,13), (13,11), (15,14), (15,2), (55,1)]
+
+-- input: 10
+-- output: a sequence containing all prime powers of 10
+prime10short :: [(Int,Int)]
+prime10short = [(3,11), (847,45), (143,6), (7,3), (10,91), (3,7), (36,325), (1,2), (36,5)]
+
+prime10 :: [(Int,Int)]
+prime10 = [(7,3), (99,98), (13,49), (39,35), (36,91), (10,143), (49,13), (7,11), (1,2), (91,1)]
+