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: ['4943', 't', '5097', 'w', 's', 'n', '4905', '8341', 'k', '611', '5629', '4933', '8271', '6647', 'J', '4741', '8505']

4943, 20, 5097, 23, 19, 14, 4905, 8341, 11, 611, 5629, 4933, 8271, 6647, 10, 4741, 8505