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: ['7949', '8047', 't', '9913', 'd', '8641', 'n', '8383', '7493', '8819', '6981', 'n', '6287', '8685', 'b', '7535']

SOLUTION: 7949, 8047, 20, 9913, 4, 8641, 14, 8383, 7493, 8819, 6981, 14, 6287, 8685, 2, 7535

PROBLEM: ['x', '4821', '5509', '6633', '1457', '8899', '6567', '7691', '8849', '1337', 'Q', '7325', '4445', '5835', 'r', '4495', 'z', '2919', 'X', '6567', '9177', '8549', 'd', 'q', 'V', 'g', 'D', 'p']

SOLUTION: 24, 4821, 5509, 6633, 1457, 8899, 6567, 7691, 8849, 1337, 17, 7325, 4445, 5835, 18, 4495, 26, 2919, 24, 6567, 9177, 8549, 4, 17, 22, 7, 4, 16

PROBLEM: ['k', '3183', 'W', '299', 'C', '4085', 'N', '2541', '8681', '4243', 'R', '6589', '579']

SOLUTION:
11, 3183, 23, 299, 3, 4085, 14, 2541, 8681, 4243, 18, 6589, 579