'''
Given two words of equal length that are in a dictionary, write a method to transform one word into another word by changing only one letter at a time. The new word you get in each step must be in the dictionary.

Example:
    Input: DAMP, LIKE
    Output: DAMP->LAMP->LIMP->LIME->LIKE

Hints:
'''


def word_transformer(s):
    pass

if __name__ == '__main__':
    assert word_transformer('') ==
    assert word_transformer('') ==
    assert word_transformer('') ==
    assert word_transformer('') ==
    assert word_transformer('') ==
