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: ['N', '5983', 's', 'D', 'm', 'P', '8385', 'Z', '9903', 'f', '7649', '2181', '5189', '4757', 'p', '1139', '5429', 'e', '2023', '7431']

SOLUTION: 14, 5983, 19, 4, 13, 16, 8385, 26, 9903, 6, 7649, 2181, 5189, 4757, 16, 1139, 5429, 5, 2023, 7431

PROBLEM: ['5445', '5961', 'Y', 'E', '8771', '6475', 'P', '5947', '4139']

SOLUTION: 5445, 5961, 25, 5, 8771, 6475, 16, 5947, 4139

PROBLEM: ['7055', '3743', 'y', '437', 'i', '7763', '5891', 'b', 'W', '4643', 'J', '4205', '5771', '8183', '3507', '1455']

SOLUTION:
7055, 3743, 25, 437, 9, 7763, 5891, 2, 23, 4643, 10, 4205, 5771, 8183, 3507, 1455