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: ['p', '6235', '6379', '9147', 'a', '3063', 'X', 'A', '8077', '4105', '4341', '2643', '8503', '1897', '3789', '703', 'B']

16, 6235, 6379, 9147, 1, 3063, 24, 1, 8077, 4105, 4341, 2643, 8503, 1897, 3789, 703, 2