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: ['Q', '4149', 'o', 'B', 'z', 's', '4311', '4111', 'e', '7385', '715', '5687', '5345', 'l', 'j', 'I', '8457', 'N', '661', '793', '3965', '4941', '4737', '9353', '8851', '2831', '1921', 'e', 'Y', 'O', 'q', '4701', 'p', '7155', '6635', '5567', 'x', '793']

17, 4149, 15, 2, 26, 19, 4311, 4111, 5, 7385, 715, 5687, 5345, 12, 10, 9, 8457, 14, 661, 793, 3965, 4941, 4737, 9353, 8851, 2831, 1921, 5, 25, 15, 17, 4701, 16, 7155, 6635, 5567, 24, 793