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: ['A', '8443', '6489', '2375', 'X', 'z', 'G', '455', '7057', '1901', '9045', 'I', 'L', 'j', '9079', '3525', 'H', '691', '1215', '801', 'T', 'J', 'a', '2543', '6805', '651', 'R', 'r', 'Z', 'h', '1697', '9797', '5989', '5501', '6929', '997']

1, 8443, 6489, 2375, 24, 26, 7, 455, 7057, 1901, 9045, 9, 12, 10, 9079, 3525, 8, 691, 1215, 801, 20, 10, 1, 2543, 6805, 651, 18, 18, 26, 8, 1697, 9797, 5989, 5501, 6929, 997