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: ['4235', 'N', '7937', '8821', 'h', '1769', '775', 'V', 'x', 'L', '1149', '2213']

4235, 14, 7937, 8821, 8, 1769, 775, 22, 24, 12, 1149, 2213