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: ['P', '2495', 'n', '4333', 'T', '5505', 'k', '5701', '9461', '5353', 'I', 'N', '6199', '3463', 'p', 'n', '9827', '5071', '2983', '9085', 'I', 'C', '1233', 'U', 'f', '6131', '9841', '8613', '5081', '9317', 's', '9543', 'h']

16, 2495, 14, 4333, 20, 5505, 11, 5701, 9461, 5353, 9, 14, 6199, 3463, 16, 14, 9827, 5071, 2983, 9085, 9, 3, 1233, 21, 6, 6131, 9841, 8613, 5081, 9317, 19, 9543, 8