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: ['3665', '2481', 'v', 'l', 'G', '8131', 'f', 'J', '8967', '7155']

3665, 2481, 22, 12, 7, 8131, 6, 10, 8967, 7155