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: ['z', '8083', '9993', 'C', 's', '699', 'G', 'F', '7697', 'Q', 'v', 'K', '3375', '3291', '5167', '6855']

26, 8083, 9993, 3, 19, 699, 7, 6, 7697, 17, 22, 11, 3375, 3291, 5167, 6855