38 lines
671 B
Python
38 lines
671 B
Python
def main():
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print (
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unlines([
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unwords([w1, w2, w3, w4])
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for w1 in ['the', 'that', 'a']
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if True
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for w2 in ['frog', 'elephant', 'thing']
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if joins(w1, w2)
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for w3 in ['walked', 'treaded', 'grows']
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if joins(w2, w3)
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for w4 in ['slowly', 'quickly']
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if joins(w3, w4)
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])
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)
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# joins :: String -> String -> Bool
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def joins(a, b):
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return a[-1] == b[0]
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# unlines :: [String] -> String
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def unlines(xs):
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return '\n'.join(xs)
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# unwords :: [String] -> String
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def unwords(xs):
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return ' '.join(xs)
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if __name__ == '__main__':
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main()
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