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: ['j', '5075', 'R', 'I', 'y', '7405', '5539', '6463', '8961', '1803', '8897', '1929', 'E', 'N', '9433', 'C']

SOLUTION: 10, 5075, 18, 9, 25, 7405, 5539, 6463, 8961, 1803, 8897, 1929, 5, 14, 9433, 3

PROBLEM: ['O', '6881', '759', '6693', 'i', 'c', '5921', 'z', 'w', '3775', '9997', 'e', '775']

SOLUTION: 15, 6881, 759, 6693, 9, 3, 5921, 26, 23, 3775, 9997, 5, 775

PROBLEM: ['4657', '391', 'A', 'x', 'y', '467', 'I', 'T', 'w', '6691', 'N', 'o', 'F', 'J', 'E', '9113', '1843', '2179', 'M', 'R', 'q', '7067', '6481', '2125']

SOLUTION:
4657, 391, 1, 24, 25, 467, 9, 20, 23, 6691, 14, 15, 6, 10, 5, 9113, 1843, 2179, 13, 18, 17, 7067, 6481, 2125