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: ['7461', '7135', '8345', '5929', '8433', 'N', '5309', 'P', '7743', 'w', 'E', 'x', 'K', 'Y', 'E', 'E', 'a', 's', 'e', '5831', '3285', '8985', 'k', 'E', 'E', 'V', 'l', 'J', '6015', '9743']

7461, 7135, 8345, 5929, 8433, 14, 5309, 16, 7743, 23, 5, 24, 11, 25, 5, 5, 1, 19, 5, 5831, 3285, 8985, 11, 5, 5, 22, 12, 10, 6015, 9743