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: ['4867', 'Y', 't', '8365', 'f', '9409', 'H', '1913', 'J', 'F', 'w']

SOLUTION: 4867, 25, 20, 8365, 6, 9409, 8, 1913, 10, 6, 23

PROBLEM: ['1129', '9905', '2643', '2241', 'q']

SOLUTION: 1129, 9905, 2643, 2241, 17

PROBLEM: ['q', '2127', '3617', '3689', '9883', '1769', 'Z', 'Q', 'O', 'P', '4763', 'f', '9339', '3857', '6259', 'T', 'y', 'P', '8597', 'v', 'R', 'F', 'c']

SOLUTION:
17, 2127, 3617, 3689, 9883, 1769, 26, 17, 15, 16, 4763, 6, 9339, 3857, 6259, 20, 25, 16, 8597, 22, 18, 6, 3