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: ['2705', '3963', '5729', 'e', 'J', '341', 'J', '5427', '6777', 'z', '2091', '3221', 'b', 'H', 'I', '3901', 'z', '125', '4117', '5583']

2705, 3963, 5729, 5, 10, 341, 10, 5427, 6777, 26, 2091, 3221, 2, 8, 9, 3901, 26, 125, 4117, 5583