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: ['5685', '5437', '2281', '3185', '5165', '7409', '7765', 'x', '8873', '8355', '9593', '7131', '8037', 'z', '8363', '4805', 'Y', 'u', '9451', 'q', 'j', 'T', '3487', 'B', '4187', 'z', '1293', '5281', '6881', '9033']

5685, 5437, 2281, 3185, 5165, 7409, 7765, 24, 8873, 8355, 9593, 7131, 8037, 26, 8363, 4805, 25, 21, 9451, 17, 10, 20, 3487, 2, 4187, 26, 1293, 5281, 6881, 9033