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: ['2579', '7299', 'p', '8053', '9869', '5337', '4131', 'n', 'L', '5229', '5851', '8481', '9187', '8341', '5443', '2773', '1731', '3127', 'F', 'q', 'F', 'P', '3741', '5379']

2579, 7299, 16, 8053, 9869, 5337, 4131, 14, 12, 5229, 5851, 8481, 9187, 8341, 5443, 2773, 1731, 3127, 6, 17, 6, 16, 3741, 5379