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: ['I', 'G', '2607', 'o', '3463', '4843', '1661', '5505', '3795', '213', '413', 'M', 'K', '7401', 'b', '9323', '3905', '9765', '6193', 'x', '7297', 'a', 'n', 'g', '521', 'l', 'X', '4103', 'M', '8583', 'p', 'b', 'G', 'Q', '7417', '4005', 'M', 'R']

9, 7, 2607, 15, 3463, 4843, 1661, 5505, 3795, 213, 413, 13, 11, 7401, 2, 9323, 3905, 9765, 6193, 24, 7297, 1, 14, 7, 521, 12, 24, 4103, 13, 8583, 16, 2, 7, 17, 7417, 4005, 13, 18