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: ['l', 'U', 'b', 'j', 'j', 'd', 'E', '3481', '4597', '4893', 's', '5127', 'M', 'V', '5671', '7459', 'd', '131', '9891', 'p', '611', 'B', '929', '6925', '4529', 'X', 'z', '8555', 'J', 'h', 'p', '5897', '1129', 'd', 'F', '8161', '7003', 'B']

SOLUTION: 12, 21, 2, 10, 10, 4, 5, 3481, 4597, 4893, 19, 5127, 13, 22, 5671, 7459, 4, 131, 9891, 16, 611, 2, 929, 6925, 4529, 24, 26, 8555, 10, 8, 16, 5897, 1129, 4, 6, 8161, 7003, 2

PROBLEM: ['W', '7533', '1447', '5111', '2125', 'F', 't', '1481', 'w', 'x', '6279', 'Y', '4167', 'P', 'y', '663', 'W', 'm', '3717', 'n']

SOLUTION: 23, 7533, 1447, 5111, 2125, 6, 20, 1481, 23, 24, 6279, 25, 4167, 16, 25, 663, 23, 13, 3717, 14

PROBLEM: ['h', 'w', '9761', 'T', '3349', 'O', '31', '1373', 'n', 'l', 'c', '3615', 'c', '5673', '5745', '6741', 'V', '4035', '3203', '5569', '8667', 'k', 'Y', '5373']

SOLUTION:
8, 23, 9761, 20, 3349, 15, 31, 1373, 14, 12, 3, 3615, 3, 5673, 5745, 6741, 22, 4035, 3203, 5569, 8667, 11, 25, 5373