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: ['6585', 'z', 'g', '7155', '9333', '377', '1619', 'M', 'd', '3189', 'v', 'z', '187', 'T', 'p', '6143', '8483', 'j', 'g', '3943']

6585, 26, 7, 7155, 9333, 377, 1619, 13, 4, 3189, 22, 26, 187, 20, 16, 6143, 8483, 10, 7, 3943