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: ['m', 'q', 'O', '6051', '9067', '2415', 'P', 't', 'y', 'k', '7685', 'P', 'C', '2783', 'M', '469', '8829', '43', '7789', 'x', '1699', '8837', 's', 'l', 'Q', '5809', '1787', 'G', '6193', '1717', 'y', 'd', '9521', 'X', '4085', '2783', 'I', '3651']

13, 17, 15, 6051, 9067, 2415, 16, 20, 25, 11, 7685, 16, 3, 2783, 13, 469, 8829, 43, 7789, 24, 1699, 8837, 19, 12, 17, 5809, 1787, 7, 6193, 1717, 25, 4, 9521, 24, 4085, 2783, 9, 3651