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: ['z', '9187', 'k', 'l', 'm', 'n', 'c', '7405', '5663', '2233', 'O', '7089', '7221', '4935', 'p', 'O', '3993', 'C', 'g', 'J', 'g', '7185', 'y', '2563']

26, 9187, 11, 12, 13, 14, 3, 7405, 5663, 2233, 15, 7089, 7221, 4935, 16, 15, 3993, 3, 7, 10, 7, 7185, 25, 2563