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: ['7469', 'F', 'f', 'O', 'X', 'A', 'j', 'u', '4763', 'o', '4451', 'S', '9469', '1779', '8089', 'D', 'n', 'R', 'm', '8465', '5865', '6759', 'Y', 'w', 'H', '5547', 'V', 'j', '3747', '3865', '549', 'r', '4383', '9179', '6307', '9723', 'J', 'p']

SOLUTION: 7469, 6, 6, 15, 24, 1, 10, 21, 4763, 15, 4451, 19, 9469, 1779, 8089, 4, 14, 18, 13, 8465, 5865, 6759, 25, 23, 8, 5547, 22, 10, 3747, 3865, 549, 18, 4383, 9179, 6307, 9723, 10, 16

PROBLEM: ['859', '3249', 'x', '1373', 'd', 'n', '8667', 'Z', 'w', '1791', 'h', '4511', '1829', 'k', 'o', '4485', 'C', '7677', 'P', '4663', 'F', '3943', '1807', 'L', 'Y', 'W', 'l', 'Z', 'a', 'Z', 'j', '7693', '4215', 'N', 'N', 'O']

SOLUTION: 859, 3249, 24, 1373, 4, 14, 8667, 26, 23, 1791, 8, 4511, 1829, 11, 15, 4485, 3, 7677, 16, 4663, 6, 3943, 1807, 12, 25, 23, 12, 26, 1, 26, 10, 7693, 4215, 14, 14, 15

PROBLEM: ['4059', '9089', '5623', 'C', 'L', 'q', 'w', '3417', 'h', 'D', 'q', 'w', 'U', 'M', '2557', '793', 'w', '9983', '8855', 'Y', 'b', 'a', '8211', 's', '2713', 'Q', '2073', 'Q', '4259', 'h', 'L', '2291', 'G', 'D']

SOLUTION:
4059, 9089, 5623, 3, 12, 17, 23, 3417, 8, 4, 17, 23, 21, 13, 2557, 793, 23, 9983, 8855, 25, 2, 1, 8211, 19, 2713, 17, 2073, 17, 4259, 8, 12, 2291, 7, 4