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: ['675', 'H', 't', '9051', '8943', 'b', 'v', 'q', '2983', 'm', '4005', 'z']

675, 8, 20, 9051, 8943, 2, 22, 17, 2983, 13, 4005, 26