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: ['f', '1451', '9565', 'l', '7155', 'c', '3333', '1153', 'q', 'V', 'B', '6937', 'E', 'G', 'g', '7579', 'E', 'J', '5605', '7709', '3125', '2359', 'L', '7833', '5761']

6, 1451, 9565, 12, 7155, 3, 3333, 1153, 17, 22, 2, 6937, 5, 7, 7, 7579, 5, 10, 5605, 7709, 3125, 2359, 12, 7833, 5761