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: ['f', '7711', 'h', '3301', 'L', 'K', 'T', 'E', 'Y', '947', '8391', '4785', 'Y', '1089', 'X', 'n', '2029', 'O', '8959', '4625', 'o', '5601', 'b', 'X', '29', '949', '9311', 'W', '8625', '9911']

6, 7711, 8, 3301, 12, 11, 20, 5, 25, 947, 8391, 4785, 25, 1089, 24, 14, 2029, 15, 8959, 4625, 15, 5601, 2, 24, 29, 949, 9311, 23, 8625, 9911