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: ['6957', 'w', '2927', 'V', '2119', 'E', 'N', '7799', '6845', 'H', '1439', '5435', '7499', 'V', 'R', '9701', 'w', '4359', 'd', 'y']

6957, 23, 2927, 22, 2119, 5, 14, 7799, 6845, 8, 1439, 5435, 7499, 22, 18, 9701, 23, 4359, 4, 25