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: ['3369', '2589', '2069', '6691', 'G', 'd', 'A', '6495', 'Y', 'a', 'k', 'N', 'o', '7855', '2799', 'r', 'Y', '3235', '6529']

3369, 2589, 2069, 6691, 7, 4, 1, 6495, 25, 1, 11, 14, 15, 7855, 2799, 18, 25, 3235, 6529