Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['6889', '7317', '6321', 'A', 'n', 'Q', 'f', '5527', '1687', '1953', '7479']

6889, 7317, 6321, 1, 14, 17, 6, 5527, 1687, 1953, 7479