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: ['z', 'f', '5867', '3475', 'A', '4535', 'm', 'S', '1189', '3275', '3249', 'a', 'K', '2015', 'W', '6543', 'O', 'K', 'E', 'C', 'O', '5889', '6795', 'M', 'A', 'p', '4315', '9367', 'i', '5781', '875', '7125', 'i', 'H', '4399', '3707', '7141', 'E', 'z']

SOLUTION: 26, 6, 5867, 3475, 1, 4535, 13, 19, 1189, 3275, 3249, 1, 11, 2015, 23, 6543, 15, 11, 5, 3, 15, 5889, 6795, 13, 1, 16, 4315, 9367, 9, 5781, 875, 7125, 9, 8, 4399, 3707, 7141, 5, 26

PROBLEM: ['5757', 'V', 'J', '255', 'I', 'V', 'a', '9533', 'h', '8741', 'b', 'O', 'r', 'Z', 'l', '3043', 'q', 'j', '1205', 'q', 'd', '5299', '8083', 'J', 'I', '3857', '1819', '1695', '1847', 'E', '2043', '4457', 'V', 'd', 't', 'E', 'r']

SOLUTION: 5757, 22, 10, 255, 9, 22, 1, 9533, 8, 8741, 2, 15, 18, 26, 12, 3043, 17, 10, 1205, 17, 4, 5299, 8083, 10, 9, 3857, 1819, 1695, 1847, 5, 2043, 4457, 22, 4, 20, 5, 18

PROBLEM: ['O', 'G', 'o', '7335', 'u', '3805', '6031', 'e', '6499', '6609', '805', '6923', 'r', 'c', 'u', '5781', 'L', 'j', 'R', '9691', '6803', '7919', '6587', 'h', 'i', 'x', '663', 'c']

SOLUTION:
15, 7, 15, 7335, 21, 3805, 6031, 5, 6499, 6609, 805, 6923, 18, 3, 21, 5781, 12, 10, 18, 9691, 6803, 7919, 6587, 8, 9, 24, 663, 3