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: ['i', '3233', '6245', 'a', '2385', 'L', 'H', 'K', 'r', '773', '135', 'c', 'p', '5229', 't', 'n', '7001', 'Z', 'j', 'L', 't', '4481', 't', 'C', '7463', 'a', 'g', '5415', '6797', '7043', 'L', '4503', '8901']

9, 3233, 6245, 1, 2385, 12, 8, 11, 18, 773, 135, 3, 16, 5229, 20, 14, 7001, 26, 10, 12, 20, 4481, 20, 3, 7463, 1, 7, 5415, 6797, 7043, 12, 4503, 8901