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: ['E', '5933', 'G', '8637', 'p', 'p', '791']

5, 5933, 7, 8637, 16, 16, 791