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: ['5525', 'N', 'K', 'T', 'c', '2611', 'P', '7287', 'U', 'b', 'E', 'n', 'a', '4863', 'V', 't', '3329', 'z', '4545', '9725', '271', '2987', 'p', 'r', 'H', '3981', '5493', '653', 'x', 'o', '8901', '5787', 'i', 'I', '7665', 'N', '3281', 'p', 'h', '919']

5525, 14, 11, 20, 3, 2611, 16, 7287, 21, 2, 5, 14, 1, 4863, 22, 20, 3329, 26, 4545, 9725, 271, 2987, 16, 18, 8, 3981, 5493, 653, 24, 15, 8901, 5787, 9, 9, 7665, 14, 3281, 16, 8, 919