Implement a function that meets the specifications below.

def cipher(map_from, map_to, code): """ map_from, map_to: strings where each contain N unique lowercase letters. code: string (assume it only contains letters also in map_from) Returns a tuple of (key_code, decoded). key_code is a dictionary with N keys mapping str to str where each key is a letter in map_from at index i and the corresponding value is the letter in map_to at index i. decoded is a string that contains the decoded version of code using the key_code mapping. """ # Your code here 

For example,

cipher("abcd", "dcba", "dab") returns (order of entries in dictionary may not be the same) ({'a':'d', 'b': 'c', 'd': 'a', 'c': 'b'}, 'adc')

Paste your entire function, including the definition, in the box below. Do not leave any debugging print statements.