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: ['7547', 'F', 'U', '7373', '7425', 'J', 'P', 'U', '2989', 'N', '915', 'p', '9521', '5389', '6833', '233', '5695', 'X', '5985', 'p', '3235', '4533', '8353', '161', 'A', 'Q', 'l', 'U', '9349', 'K', 'w', '3369', '8895', 'j']

7547, 6, 21, 7373, 7425, 10, 16, 21, 2989, 14, 915, 16, 9521, 5389, 6833, 233, 5695, 24, 5985, 16, 3235, 4533, 8353, 161, 1, 17, 12, 21, 9349, 11, 23, 3369, 8895, 10