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: ['4127', '8141', 'u', '161', 'N', '3825', '6779', '1005', 'p']

4127, 8141, 21, 161, 14, 3825, 6779, 1005, 16