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: ['693', '3209', '6191', '285', 'x', 'H', 'a', '1993', '5807', 'h', 'A', '2341', 'e', '2705', 'C', 'C', 't', '8829', '6285', '5193', '1719', 'j', 'z', 'F', '7235', '9981', 'i']

693, 3209, 6191, 285, 24, 8, 1, 1993, 5807, 8, 1, 2341, 5, 2705, 3, 3, 20, 8829, 6285, 5193, 1719, 10, 26, 6, 7235, 9981, 9