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: ['7681', '5897', 'R', 'F', '5945', '1023', '6865', 'I', '6079', '4791', 'b', '9663', 'x', 'U', 'd', '2329', '9447', 'y', '4921', '683', '1305', 'V', '5879', 'e', 'i', '9833', 'l', '2951', '9137', 'b', '3913', 'k', 'q', 's']

7681, 5897, 18, 6, 5945, 1023, 6865, 9, 6079, 4791, 2, 9663, 24, 21, 4, 2329, 9447, 25, 4921, 683, 1305, 22, 5879, 5, 9, 9833, 12, 2951, 9137, 2, 3913, 11, 17, 19