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: ['8069', '3885', '1367', '7537', 'Q', 'a', '2751']

8069, 3885, 1367, 7537, 17, 1, 2751