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: ['T', '5383', 'p', '6203', '4539', 'Z', '7477', 'B', '5593', '1441', '901', '6509', '6449', '993', 'O', 'P', 'Q', '2935', '9949', 'T', '1965', '9929', '517', 'K', '513', 'M']

20, 5383, 16, 6203, 4539, 26, 7477, 2, 5593, 1441, 901, 6509, 6449, 993, 15, 16, 17, 2935, 9949, 20, 1965, 9929, 517, 11, 513, 13