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', '6977', '9655', '3439', 'f', '3083', '1013', '2521', 'W', '2159', '13', '5849', 'S', 'F', '2427', '687', '2031', 'V', 'i', '4441', 'V', '6017', 'Q', '9409', '8161', 'L', 'X', '1029', '9331', 's', '7751', 'Q', 'F', 'H', 's', 'B', 'I', 'C', 'w', '1015']

6, 6977, 9655, 3439, 6, 3083, 1013, 2521, 23, 2159, 13, 5849, 19, 6, 2427, 687, 2031, 22, 9, 4441, 22, 6017, 17, 9409, 8161, 12, 24, 1029, 9331, 19, 7751, 17, 6, 8, 19, 2, 9, 3, 23, 1015