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: ['7277', 'D', '2101', 'W', 'E', '4325', '7747', 'H', '4783', 'S', 'V', 'z', '4897', 'S', 'F', 'Z', 'w', 'O', 'A', 'K', 'C', 'Z', '6619', '8315', 'A']

7277, 4, 2101, 23, 5, 4325, 7747, 8, 4783, 19, 22, 26, 4897, 19, 6, 26, 23, 15, 1, 11, 3, 26, 6619, 8315, 1