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: ['a', '957', '3185', 'H', 'm', 'k', 'V', 'U', 'X', '9625', 'J', '1387', 'w', 'U', '3451', '511', '3713', '4203', 'U', 's', '463', '9877', '3327', '1809', 'W', 'v', 'D', '7327', 'q', '765']

1, 957, 3185, 8, 13, 11, 22, 21, 24, 9625, 10, 1387, 23, 21, 3451, 511, 3713, 4203, 21, 19, 463, 9877, 3327, 1809, 23, 22, 4, 7327, 17, 765