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: ['8383', 'R', '8303', '225', 'i', '2195', '1217', 'o', '6661', '8959', 'V', '2639', 'O', '2017', '1945', '457', 'y', 'E', 'Y', '5077', 'W', 'm', '5947', '5331', '49', '6959', 'w', 'X', 'Y', 'Y', '7537', 'c']

8383, 18, 8303, 225, 9, 2195, 1217, 15, 6661, 8959, 22, 2639, 15, 2017, 1945, 457, 25, 5, 25, 5077, 23, 13, 5947, 5331, 49, 6959, 23, 24, 25, 25, 7537, 3