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: ['9431', '7987', 'i', 'F', 'd', '8423', 'w', '6941', '2145', '3097']

9431, 7987, 9, 6, 4, 8423, 23, 6941, 2145, 3097