TASK 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.
PROBLEM: ['9307', 't', '7521', '1787', 'K', 'R', 'S', 'q', 'Q', '9679', '6415', 'V', '9593', 'X', 'U', '707', '3367', 'J', 'H', 'Q', '9889', 'w', 'd', '7075', 'L', 'F', 'j', 't', 'W', 'r', '4743', '2469', 'D', 's', '4687', 'n']

SOLUTION: 9307, 20, 7521, 1787, 11, 18, 19, 17, 17, 9679, 6415, 22, 9593, 24, 21, 707, 3367, 10, 8, 17, 9889, 23, 4, 7075, 12, 6, 10, 20, 23, 18, 4743, 2469, 4, 19, 4687, 14

PROBLEM: ['v', '9147', 'x', '9763', '7161', 'M', 'o', '641', 'n', 'n', '8593', '5039', '6421', 'X', 'G', '4907', '3725', 'P', 'Z', 's', '4415', 'h', 'C', 'R', 'G', 'F', '1383', '2719', '8159', 'K', '4439', '9329', 'K', '4379', '7295', 'q']

SOLUTION: 22, 9147, 24, 9763, 7161, 13, 15, 641, 14, 14, 8593, 5039, 6421, 24, 7, 4907, 3725, 16, 26, 19, 4415, 8, 3, 18, 7, 6, 1383, 2719, 8159, 11, 4439, 9329, 11, 4379, 7295, 17

PROBLEM: ['M', '2257', '8563', 's', '8147', 'I', 's']

SOLUTION:
13, 2257, 8563, 19, 8147, 9, 19