Advanced Python list comprehension

Question

Given two lists:

chars = [\'ab\', \'bc\', \'ca\']
words = [\'abc\', \'bca\', \'dac\', \'dbc\', \'cba\']

how can you use list comprehensions to

Answer 1

This works, using index:

[words[chars.index(char)] for char in chars if char in words[chars.index(char)]]

Am I missing something?