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: ['G', '2741', '5965', '8225', 'a', 'X', '1193', '7259', 'K', '8511', 'Z', 'l', 'H', '1317', '6805']

7, 2741, 5965, 8225, 1, 24, 1193, 7259, 11, 8511, 26, 12, 8, 1317, 6805