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: ['7315', '7487', '7655', 'e', 'G', '8603', '6987', '8593', 'U', '4425', '2131', 'v', 'C', '6499', '8249', '1581', 'k', 'y', 'X', '8291', '1389', 'I', 'v', 'h', 'h', 'r', 'x', '4933', '9065', '6009', 'w', '4187', '4869', 'w', 'X', '5671']

7315, 7487, 7655, 5, 7, 8603, 6987, 8593, 21, 4425, 2131, 22, 3, 6499, 8249, 1581, 11, 25, 24, 8291, 1389, 9, 22, 8, 8, 18, 24, 4933, 9065, 6009, 23, 4187, 4869, 23, 24, 5671