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: ['5983', 'p', 'A', '9415', 'V', 'R', '7957', 'M', '1477', '9155', 'Q', 'm', '8053', 'u', '4103', '2265', '9661', '9065', '3961', 'O', 'T', 'x', '5881', '7125', '8857', 'P', 'H', 'K', 'A', 'A', '6625']

5983, 16, 1, 9415, 22, 18, 7957, 13, 1477, 9155, 17, 13, 8053, 21, 4103, 2265, 9661, 9065, 3961, 15, 20, 24, 5881, 7125, 8857, 16, 8, 11, 1, 1, 6625