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.

['n', '8891', 'A', 'A', '3927', '7777', 't', 'E', 'A', 'T', 'S', '9711', 'z', 'o', '2661', 'i', 'o', '3391', 'C', '331', 'r', '5697', 'G', 'H', '3341', 'k', 'R', 'C', '7805', 'L', 'Q', 'V', 'A', '55', '8015', 'm', 'k']
14, 8891, 1, 1, 3927, 7777, 20, 5, 1, 20, 19, 9711, 26, 15, 2661, 9, 15, 3391, 3, 331, 18, 5697, 7, 8, 3341, 11, 18, 3, 7805, 12, 17, 22, 1, 55, 8015, 13, 11

['I', 'y', 'E']
9, 25, 5

['6603', '3879', 'X', 'l', '2099', '4309', '1265', '6071', 'Q', 'S', '2081', 'd']

6603, 3879, 24, 12, 2099, 4309, 1265, 6071, 17, 19, 2081, 4