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: ['77', 'P', '5711', 'M', '9721', '1767', '8775', 'J', 'Y', '7463', 'c', 'E', 'J', '2589', 'Q', 'e', 'X', 'N', 'D', 'z', 'K', 'T', '7389', '4483', 'f', '7723', '7995', '729', 'l', 't', 'j', '353', 'H', '4787', '6627', '4747', 'Q']

77, 16, 5711, 13, 9721, 1767, 8775, 10, 25, 7463, 3, 5, 10, 2589, 17, 5, 24, 14, 4, 26, 11, 20, 7389, 4483, 6, 7723, 7995, 729, 12, 20, 10, 353, 8, 4787, 6627, 4747, 17