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: ['j', 'Q', '4627', '8807', '5915', '3523', 'S', 'A', '4323', '2957', 'H', 'u', 'M', 'x', '7839', 'B', '7399', '5971', 'w', 'd', '1641', 'J', 'P', '9983', 'I']

10, 17, 4627, 8807, 5915, 3523, 19, 1, 4323, 2957, 8, 21, 13, 24, 7839, 2, 7399, 5971, 23, 4, 1641, 10, 16, 9983, 9