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.
Input: ['S', '3325', '8223', 'd', '1117', '1643', '8351', '7479', 'W', 'j', 'a', '8927', '6871', 'i', 'J', '89', '7365', '6207', '9317', '1563', '5439', '1839', '8663', '9093', '2459', '8063', 'd', '8365', 'y', 'a', '459', 'U', 'B', '4119', '6745', '2689', '6787']

19, 3325, 8223, 4, 1117, 1643, 8351, 7479, 23, 10, 1, 8927, 6871, 9, 10, 89, 7365, 6207, 9317, 1563, 5439, 1839, 8663, 9093, 2459, 8063, 4, 8365, 25, 1, 459, 21, 2, 4119, 6745, 2689, 6787