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: ['o', 'L', '9277', '1513', 'I', 'N', 'j', '2901', 'm', 'O', '5413', 'w', 'G', 'e', 'Q', 'K', 'q', '4287', 'C', 'c', '8217', '1205', '5189']

15, 12, 9277, 1513, 9, 14, 10, 2901, 13, 15, 5413, 23, 7, 5, 17, 11, 17, 4287, 3, 3, 8217, 1205, 5189