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: ['a', 'g', '1387', '1107', 'l', 'X', 'M', 'L', '2163', '7217', '2313', 'P', 'x', '9553', '9885', '5295', '3927', 'K', 'A', 'T', '5513', 'x', '1121', 'q', '8919', 'o', 'z', '1413', '4607', '4223', '3261', '921', 'y', 'F', '185', '5101', '2681', '3745']

1, 7, 1387, 1107, 12, 24, 13, 12, 2163, 7217, 2313, 16, 24, 9553, 9885, 5295, 3927, 11, 1, 20, 5513, 24, 1121, 17, 8919, 15, 26, 1413, 4607, 4223, 3261, 921, 25, 6, 185, 5101, 2681, 3745