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: ['8555', 'i', 'k', 'S', '2087', '3173', 'L', 'c', '6565', '5925', '7023', '723', '4561', '1783', '4133', '9889', '3921', '1277', '3951', 'B']

SOLUTION: 8555, 9, 11, 19, 2087, 3173, 12, 3, 6565, 5925, 7023, 723, 4561, 1783, 4133, 9889, 3921, 1277, 3951, 2

PROBLEM: ['h', 'v', 'j', 'O', 'N', 'J', '7149', '2651', '4951', '2217', 'O', '6331', '7163', '1447', '5935', '1697', 'P', 'K', '7253', '6223', 't', 's', 'F', 'c', 'c', 'M', 'f', '5945', '2289', 'g', '585', '2831', '3187', '2299', 'y', '151']

SOLUTION: 8, 22, 10, 15, 14, 10, 7149, 2651, 4951, 2217, 15, 6331, 7163, 1447, 5935, 1697, 16, 11, 7253, 6223, 20, 19, 6, 3, 3, 13, 6, 5945, 2289, 7, 585, 2831, 3187, 2299, 25, 151

PROBLEM: ['45', 'E', '4605', 'S', '9469', '3187', '4547', '9477', '5183']

SOLUTION:
45, 5, 4605, 19, 9469, 3187, 4547, 9477, 5183