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: ['r', 'z', '8645', '9053', '3629', '7689', '4465', '5281', 'Y', 'B']

SOLUTION: 18, 26, 8645, 9053, 3629, 7689, 4465, 5281, 25, 2

PROBLEM: ['e', 'a', '3337', 'R', 'H']

SOLUTION: 5, 1, 3337, 18, 8

PROBLEM: ['4427', '7045', 'e', '3023', '6645', 'B', '6579', 'D', '5215', 'X', 'T', '7893', '677', '429', 'J', '2199', 'Z', 'p', '2457', 'B', 'K', 'p', 'j', 'E', 'M', 'R', 'y']

SOLUTION:
4427, 7045, 5, 3023, 6645, 2, 6579, 4, 5215, 24, 20, 7893, 677, 429, 10, 2199, 26, 16, 2457, 2, 11, 16, 10, 5, 13, 18, 25