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', 'J', 'q', 'd', 'R', 'Y', '3413', 'F', 'X', '2973', '7023']

2, 10, 17, 4, 18, 25, 3413, 6, 24, 2973, 7023