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', '1491', 'Q', 'y', 'D', 'b', '1667', 'W', '9611', '3105', 'Z', '3705', '9391']

SOLUTION: 2, 1491, 17, 25, 4, 2, 1667, 23, 9611, 3105, 26, 3705, 9391

PROBLEM: ['P', '3341', 'j', 'A', '4173', 'T', '4883', '541', 'D', '8811', 'y', 's', 'w', '1691', '6899', 'D', '8761', '6445', 's', 'd', 'Q']

SOLUTION: 16, 3341, 10, 1, 4173, 20, 4883, 541, 4, 8811, 25, 19, 23, 1691, 6899, 4, 8761, 6445, 19, 4, 17

PROBLEM: ['4515', '5147', 'k', 'J', '9649', 'T', 'S', '8729', 'm', '9141', '7771', '2765', '9589', 'R', '7927', 'd', '5569', '1039', '6889', 'E', 'I', 'z', 'O', '6015']

SOLUTION:
4515, 5147, 11, 10, 9649, 20, 19, 8729, 13, 9141, 7771, 2765, 9589, 18, 7927, 4, 5569, 1039, 6889, 5, 9, 26, 15, 6015