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: ['6193', '2301', 'b', '5627', '4467', '3289', '5849', '191', 'M', 'n', 'T', '6813', '7807', '8295', 'C', 'U', '8579', 'b', 't', '8539', 'L', '7699', 'x', 'T']

6193, 2301, 2, 5627, 4467, 3289, 5849, 191, 13, 14, 20, 6813, 7807, 8295, 3, 21, 8579, 2, 20, 8539, 12, 7699, 24, 20