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: ['H', 'y', '8457', '7179', '6303', '5821', '8361', '2193', 'l', '4903', 'L', '9797', '7863', 'w', 'g', '3867', 'n', '6353', '713', '4211', '4179', '1967', 'j', 'r', '7561', '217', '2287', '1691']

8, 25, 8457, 7179, 6303, 5821, 8361, 2193, 12, 4903, 12, 9797, 7863, 23, 7, 3867, 14, 6353, 713, 4211, 4179, 1967, 10, 18, 7561, 217, 2287, 1691