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: ['c', 'e', '8741', 'F', 'O', '407', '4435', '1887', 'O', '1193', '1821', '8135', '6717', 't', 'J', '6767', '639', 'q', '4145', '85', '3571', 'L', '2501', 'Y']

SOLUTION: 3, 5, 8741, 6, 15, 407, 4435, 1887, 15, 1193, 1821, 8135, 6717, 20, 10, 6767, 639, 17, 4145, 85, 3571, 12, 2501, 25

PROBLEM: ['A', '785', '1403', '5507', '5833']

SOLUTION: 1, 785, 1403, 5507, 5833

PROBLEM: ['C', 'z', 'H', '7081', '8403', '5839', 'F', '9351', 'M', '5847', '8677', '5967', 'v', 'G', '741', 'H', '8225', 'u', '9885', 'h', 'S', '4939', 'Y', 'g', 'R', '379', 'Y', '8527', '6369', 'A', 'm', 'y', '9537', 'O', '9179', '7821']

SOLUTION:
3, 26, 8, 7081, 8403, 5839, 6, 9351, 13, 5847, 8677, 5967, 22, 7, 741, 8, 8225, 21, 9885, 8, 19, 4939, 25, 7, 18, 379, 25, 8527, 6369, 1, 13, 25, 9537, 15, 9179, 7821