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: ['h', '5281', 'K', '6739', 'P', 'V', '8745', 'M', 'J', '9283', 'C', 'G', 'a', '5031', '5049', 'A', 'A', 'y']

SOLUTION: 8, 5281, 11, 6739, 16, 22, 8745, 13, 10, 9283, 3, 7, 1, 5031, 5049, 1, 1, 25

PROBLEM: ['P', '8023', 'n', 'M', '9481', 'K', '9377', 'R', '2879', 'K', '9279', 'b', '9483', '3013', '6553', '381', 'f']

SOLUTION: 16, 8023, 14, 13, 9481, 11, 9377, 18, 2879, 11, 9279, 2, 9483, 3013, 6553, 381, 6

PROBLEM: ['2803', '8285', 'U', 'O', '9329', '695', '3877', '1873', '2365', 'P', '153', 'D', '8495', '7593', '4067', 'Y', 'u', '4885', 'f', 'B', 'o', '8499']

SOLUTION:
2803, 8285, 21, 15, 9329, 695, 3877, 1873, 2365, 16, 153, 4, 8495, 7593, 4067, 25, 21, 4885, 6, 2, 15, 8499