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: ['7879', '3761', 'Q', '2033', '3771', 'l', '2853', '2043', '2033', 'M', '5489', '1993', '5119', 'H', 'n', '873', '6301', '8941', 'f', 'W', 'i', '2827', 'S', 'e', '9503', 'X', 'J', '5739', 'p', 'N', '9717']

7879, 3761, 17, 2033, 3771, 12, 2853, 2043, 2033, 13, 5489, 1993, 5119, 8, 14, 873, 6301, 8941, 6, 23, 9, 2827, 19, 5, 9503, 24, 10, 5739, 16, 14, 9717