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: ['8437', 'Z', 'h', 'T', '7813', '6009', '5719', '467', '4941', '5895', '2855', 'i', '1061', '8983', 'z', 'M', 'O', '7809', 'F', 'M', '2207', 'h', '413', 'e', '1293']

8437, 26, 8, 20, 7813, 6009, 5719, 467, 4941, 5895, 2855, 9, 1061, 8983, 26, 13, 15, 7809, 6, 13, 2207, 8, 413, 5, 1293