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: ['4923', 'E', '2295', 'n', '137', '3177']

4923, 5, 2295, 14, 137, 3177