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: ['r', 'T', 'm', 'C', 'V', 'X', '1157', 'F', '1369', 'P', '9835', 'A', 'i', '8955', '6617', '9033', 'B', 'v', '9427', '1873', '4681', '8537', '3925', '715', 'y', '6439', '2933']

18, 20, 13, 3, 22, 24, 1157, 6, 1369, 16, 9835, 1, 9, 8955, 6617, 9033, 2, 22, 9427, 1873, 4681, 8537, 3925, 715, 25, 6439, 2933