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: ['8633', 'h', '2861', '4683', '7985', 'a', 't', 'U', 'j', 'r', 'M', '721', '6589', '2963', '9237', '3523', 'Q', '2837', 'x', 'v', 'F', '3787', 'H', 'n', '4759', '8071', 'k', '2903', '5403', '3841', '619', '2189', '5137', '2475']

8633, 8, 2861, 4683, 7985, 1, 20, 21, 10, 18, 13, 721, 6589, 2963, 9237, 3523, 17, 2837, 24, 22, 6, 3787, 8, 14, 4759, 8071, 11, 2903, 5403, 3841, 619, 2189, 5137, 2475