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: ['l', 'j', '8339', 'G', 'm', 'g', '9161', '935', '9841']

12, 10, 8339, 7, 13, 7, 9161, 935, 9841