Write a function called find$\_$most$\_$common that takes a single dictionary parameter. Assume the keys of the dictionary will be strings $($e$.$g$.$ emoticons$)$ and each value will be a list of strings $($e$.$g$.$ user ID's$).$

i$.)$ The function should find the key that has the longest list as a value and print out that key and the length of its list. Print in the following format:

:$)$ occurs $871$ times

NOTE: In order to get this format you must left justify the emoticon by $21$ and then right justify the number by $9$ if using string concatenation, one

less in

each case if passing multiple arguments to print. 'occurs' doesn't

need to be justified.

ii$.)$ The function returns the key that had the longest list.