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: ['9383', 'L', 't', '851', 'g', 'E', 'z', 'p', 'v']

9383, 12, 20, 851, 7, 5, 26, 16, 22