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: ['5805', 'X', 'c', 'K', 'T', '6617', 'n', 'y', 'D', '1817', '1965', 'x', 'm', '185', '4029', '6483', 'U', '6109', '5397', 'q']

5805, 24, 3, 11, 20, 6617, 14, 25, 4, 1817, 1965, 24, 13, 185, 4029, 6483, 21, 6109, 5397, 17