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: ['B', '625', '6887', '913', 'w', '4539', 'E', 'q', 'C']

SOLUTION: 2, 625, 6887, 913, 23, 4539, 5, 17, 3

PROBLEM: ['5319', 'G', '6901', '3897', 'D', '7909', 'x', '2723', '9683', 'k', '91', 'P', 'u', '5847', 'X', '2795', 'w', '9953', 'D', 'y', '1401', 'F', '8885', 'V', '7301', 'V', '9073', '7831', '1151', 'z', '1425', '2121', '1395', 't', 'W']

SOLUTION: 5319, 7, 6901, 3897, 4, 7909, 24, 2723, 9683, 11, 91, 16, 21, 5847, 24, 2795, 23, 9953, 4, 25, 1401, 6, 8885, 22, 7301, 22, 9073, 7831, 1151, 26, 1425, 2121, 1395, 20, 23

PROBLEM: ['4969', '2921', 'F', '9125', '7721', '1213', '1271', '6045', '5527', '2121', '9787', 'D', 'A', '3809', '4013', '4259', 'o', 'E', 'z', '5881', 'D', 'C', 'l']

SOLUTION:
4969, 2921, 6, 9125, 7721, 1213, 1271, 6045, 5527, 2121, 9787, 4, 1, 3809, 4013, 4259, 15, 5, 26, 5881, 4, 3, 12