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: ['7829', 'p', '2907', 'h', 'c', '7617', 'k', '4707', '801', '6453', 'u', '1405', '9993', '7003', '6275', '5919', '9955', 'C', 't', '6769', 'D', 'T', '7637', '9339', 'm', '7873', 'k', '2361', 'p', 'n', '7813', '5853', 'o', 'Q', '3279', 'F', '7211', '9581', 'N']

7829, 16, 2907, 8, 3, 7617, 11, 4707, 801, 6453, 21, 1405, 9993, 7003, 6275, 5919, 9955, 3, 20, 6769, 4, 20, 7637, 9339, 13, 7873, 11, 2361, 16, 14, 7813, 5853, 15, 17, 3279, 6, 7211, 9581, 14