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: ['8343', '837', '5543', 'k', 'x', '4073', '3865', 'K', 'M', '7115', '3041', '9115', '6065', '4023', '6233', '7897', 'g', '8875']

8343, 837, 5543, 11, 24, 4073, 3865, 11, 13, 7115, 3041, 9115, 6065, 4023, 6233, 7897, 7, 8875