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: ['b', '923', '5997', '239', '7643', '9897', '6359']

SOLUTION: 2, 923, 5997, 239, 7643, 9897, 6359

PROBLEM: ['8773', 'f', '3171', '9425', '7489', 'z', 'V', '9409', 'K', '2815', 'p', '8479', '1787', 'm', '5481', '2591', 'k', '1545', '8041', '2425', '5569', 'J', 'c', 'T', '4839', 'n', '5085', '2685', '4129', 'H', 'P', '4391', 'G', '6285', 'k', 'z', 'v']

SOLUTION: 8773, 6, 3171, 9425, 7489, 26, 22, 9409, 11, 2815, 16, 8479, 1787, 13, 5481, 2591, 11, 1545, 8041, 2425, 5569, 10, 3, 20, 4839, 14, 5085, 2685, 4129, 8, 16, 4391, 7, 6285, 11, 26, 22

PROBLEM: ['a', '2261', '583', '1579', 'W', 'H', '8413', '3851', '4891', '9901', 'V', '8607', 'D', 'M', '3825', 'L', 'w', 'S', '9335', 'O', '1921', 'B', 'f', '6345', '2723', '5541', 'd', '9355', 'l']

SOLUTION:
1, 2261, 583, 1579, 23, 8, 8413, 3851, 4891, 9901, 22, 8607, 4, 13, 3825, 12, 23, 19, 9335, 15, 1921, 2, 6, 6345, 2723, 5541, 4, 9355, 12