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: ['2791', '9105', 'J', '5289', '4815', 'q', '4997', 'Q', '1373', 'S', 'g', '3127']

2791, 9105, 10, 5289, 4815, 17, 4997, 17, 1373, 19, 7, 3127