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: ['4017', 'W', 'R', '2055', '3361', '9725', 'N', 'k', '5121', '8929']

SOLUTION: 4017, 23, 18, 2055, 3361, 9725, 14, 11, 5121, 8929

PROBLEM: ['i', '1191', '9111', 'i', 'S', '3177', '2915', 'e', 'p', '6959', 'O', '8031', 't', '263', '2153', 'Q']

SOLUTION: 9, 1191, 9111, 9, 19, 3177, 2915, 5, 16, 6959, 15, 8031, 20, 263, 2153, 17

PROBLEM: ['1435', '6441', '4791', '9005', 'b', '7733', '1291', '6417', '5121', 'd', 'b', 'r', '2127', 'A', 'b', 'n', '4827', 'X', '8661', '7085', '6721', '8683', '3859', 'y', '3857']

SOLUTION:
1435, 6441, 4791, 9005, 2, 7733, 1291, 6417, 5121, 4, 2, 18, 2127, 1, 2, 14, 4827, 24, 8661, 7085, 6721, 8683, 3859, 25, 3857