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: ['443', 'T', 'v', 'k', '9453', '9003', '5075', 'I', 'n', 'T', '5789', 'i', 'M', '3483', '2351', 'n', '3709', 'b', 'l', 'F', '5703', '4565', 'Z']

443, 20, 22, 11, 9453, 9003, 5075, 9, 14, 20, 5789, 9, 13, 3483, 2351, 14, 3709, 2, 12, 6, 5703, 4565, 26