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: ['K', 'U', '8245', 'I', 'C', '5815', '5163', '3535', 'h', 'J', 'k', 'i', '5525', 'y', 's', 'u']

SOLUTION: 11, 21, 8245, 9, 3, 5815, 5163, 3535, 8, 10, 11, 9, 5525, 25, 19, 21

PROBLEM: ['b', 'J', '4053', 'y', '8929', '9763', '4825', '5429', '2619', '6105', '3163', '6485', '6525', 'a', '2713', '153', '4391', 'h', 'M', 'u', '7327', 'O', 'y', '1345', 'X', '9149', '5101', 'q']

SOLUTION: 2, 10, 4053, 25, 8929, 9763, 4825, 5429, 2619, 6105, 3163, 6485, 6525, 1, 2713, 153, 4391, 8, 13, 21, 7327, 15, 25, 1345, 24, 9149, 5101, 17

PROBLEM: ['m', '6253', '9305', 'N', 'r', '5439', 'g', '5699', '4907', '3567', '4561', 'h', 'j', 'I', 'J', 't', '773', '8029', '8315', 'V', '6843', '2869', 'R', 'I', '6405']

SOLUTION:
13, 6253, 9305, 14, 18, 5439, 7, 5699, 4907, 3567, 4561, 8, 10, 9, 10, 20, 773, 8029, 8315, 22, 6843, 2869, 18, 9, 6405