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', 'A', '7401', '2863', '7645', '7033', '8409', '949', '8973', '6637', '553', '5219', 'G', 'E', 'q', 'P', 'I', 'A', '6003', 'd', 'd', '1051', 'V', '7267', '9929', '109', 'K', 'C']

20, 1, 7401, 2863, 7645, 7033, 8409, 949, 8973, 6637, 553, 5219, 7, 5, 17, 16, 9, 1, 6003, 4, 4, 1051, 22, 7267, 9929, 109, 11, 3