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', 'C', 'G']

SOLUTION: 2, 3, 7

PROBLEM: ['8081', 'c', '7589', '8335', 'r', '4639', 'V', '4937', 'd', '165', '5371', '8353', 's', 'o', 'A', '2401', 'M', 'T', '9845', '9701', 'p', '3469']

SOLUTION: 8081, 3, 7589, 8335, 18, 4639, 22, 4937, 4, 165, 5371, 8353, 19, 15, 1, 2401, 13, 20, 9845, 9701, 16, 3469

PROBLEM: ['O', '3983', 'a', '1499', 'N', '3585', 'i', 'i', '2827', 'I', '3343', '7165', 'I', 'k', '3243', 'd', '1991', 'w', '5115', 'e']

SOLUTION:
15, 3983, 1, 1499, 14, 3585, 9, 9, 2827, 9, 3343, 7165, 9, 11, 3243, 4, 1991, 23, 5115, 5