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.

['2609', '8593', 'X', '365', '8173', '1859', '4371', 'M', '7949', 'O', 'D']
2609, 8593, 24, 365, 8173, 1859, 4371, 13, 7949, 15, 4