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: ['I', '1527', '5201', 'J', '7111', '397', '185', '7821', 'H', 'v', '3359']

9, 1527, 5201, 10, 7111, 397, 185, 7821, 8, 22, 3359