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: ['2641', 'w', 'M', '9209', '1919', 'q', 'e', 'K', '8035', '313', '3751', 's', 'I', 'J', 'y', 'H', '9273', 'g', 'b', '3641', 'N', 'y', 'E', '2013', 'N', '4917', 'u', '8687', '891', 'f', '1927', '7459', '7575', 'F', 'E', 'k']

2641, 23, 13, 9209, 1919, 17, 5, 11, 8035, 313, 3751, 19, 9, 10, 25, 8, 9273, 7, 2, 3641, 14, 25, 5, 2013, 14, 4917, 21, 8687, 891, 6, 1927, 7459, 7575, 6, 5, 11