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: ['9973', '4501', '3257', '7393', '2041', '1173', 'f', '3299', '1399', 'S', 'a', '7829', '2557', '6051', '7063', '2537', 'k', 'b', 'W', '9133', 'd']

SOLUTION: 9973, 4501, 3257, 7393, 2041, 1173, 6, 3299, 1399, 19, 1, 7829, 2557, 6051, 7063, 2537, 11, 2, 23, 9133, 4

PROBLEM: ['1327', '6419', 'k', '2175', 'w', '7697', 'T', '8963', '9845', 'r', '8423', '9387', '79', '6791', '5441', 'J', '291', '9981', 'S', '2361', 'b', '5587', 'Y', '3105', 'Q', '8853', 'U', '7933', 'Z', 'n', '3775', 'W', 'S', 'p', 'g', '445', '7699']

SOLUTION: 1327, 6419, 11, 2175, 23, 7697, 20, 8963, 9845, 18, 8423, 9387, 79, 6791, 5441, 10, 291, 9981, 19, 2361, 2, 5587, 25, 3105, 17, 8853, 21, 7933, 26, 14, 3775, 23, 19, 16, 7, 445, 7699

PROBLEM: ['B', 'L', '8999', '4119', 'q', 'c', '9681', 'Z', 'y', '539', '9583', '1023', '5963', '5429', 'r', 'O', '3553', 'Y', 'P', '2563', 'H', 'D', 'a', 'Z', '8293', '1455', '2415', 'a', 'T', '91', '2187', '6331', '3283', 'h', 'a', '8061', '2307', '4161', 'W', 'g']

SOLUTION:
2, 12, 8999, 4119, 17, 3, 9681, 26, 25, 539, 9583, 1023, 5963, 5429, 18, 15, 3553, 25, 16, 2563, 8, 4, 1, 26, 8293, 1455, 2415, 1, 20, 91, 2187, 6331, 3283, 8, 1, 8061, 2307, 4161, 23, 7