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: ['K', '3001', '1905', 'H', 'r', '8387', 'Y', 'y', '6793', 'M', '9877', 'O', 'R', '3625', 'M', 'p', 'h', 'A', '6013', 's', 'T', '763', 'Q', 'X', '3685', 'y', '621', 'v', '7633', '3305']

11, 3001, 1905, 8, 18, 8387, 25, 25, 6793, 13, 9877, 15, 18, 3625, 13, 16, 8, 1, 6013, 19, 20, 763, 17, 24, 3685, 25, 621, 22, 7633, 3305