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: ['d', 'X']

SOLUTION: 4, 24

PROBLEM: ['3893', '871', '4431', '8253', 'u', '1579', 'I', '5665', '7581']

SOLUTION: 3893, 871, 4431, 8253, 21, 1579, 9, 5665, 7581

PROBLEM: ['4439', '1429', 'v', '1407', '2513', 'K', 'Y', '3087', '2349', 'u', '6015', 'w', '4933', 'U', '297', 'w', 'G', 'm', 'e', 'D', 'Z', 'j', '5363', 'U']

SOLUTION:
4439, 1429, 22, 1407, 2513, 11, 25, 3087, 2349, 21, 6015, 23, 4933, 21, 297, 23, 7, 13, 5, 4, 26, 10, 5363, 21