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: ['b', '3093', '5267', 'k', '2459', '7193', '3815', '1759', '5713', 'Q', '4473']

2, 3093, 5267, 11, 2459, 7193, 3815, 1759, 5713, 17, 4473