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: ['w', '5531', '9103', 'I', 'W', '8305', 'q', '2429', '1521', '545', '4637', 'a', 's', 'f', '3715', 'i', '729', 'V', '6671', 'B', '3877', '7891', 'Y', '1217', 'z']

SOLUTION: 23, 5531, 9103, 9, 23, 8305, 17, 2429, 1521, 545, 4637, 1, 19, 6, 3715, 9, 729, 22, 6671, 2, 3877, 7891, 25, 1217, 26

PROBLEM: ['O', 'B', 'm', 'K', 'F', '6191', 'c', 'T', '369', 'C', 'p', '3091', 'i', '9461', '2105', 'J', '7533', 'A', 'B', '8927', 'z', 'A']

SOLUTION: 15, 2, 13, 11, 6, 6191, 3, 20, 369, 3, 16, 3091, 9, 9461, 2105, 10, 7533, 1, 2, 8927, 26, 1

PROBLEM: ['P', 'D', '2549', 'S', '781', 'L', '2277', 'I', '4115', 'w', 'l', 'e', '1129', 'O', 'U', 'd', 'j', 'D', 'B', '4079', '1299', '7339', '1169', 'a', 'n', 'C', 'O', '5057', 't', 'b', 'q', 'C', '5541']

SOLUTION:
16, 4, 2549, 19, 781, 12, 2277, 9, 4115, 23, 12, 5, 1129, 15, 21, 4, 10, 4, 2, 4079, 1299, 7339, 1169, 1, 14, 3, 15, 5057, 20, 2, 17, 3, 5541