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: ['2683', '5761', '7763', '8247', '3323', 'L', '5537', '9655', '5693', 'Z', 'w', 'F', '3535', '4829', 'o', '6197', 'I', '1491', '2247', '1321']

2683, 5761, 7763, 8247, 3323, 12, 5537, 9655, 5693, 26, 23, 6, 3535, 4829, 15, 6197, 9, 1491, 2247, 1321