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: ['9579', '585', 'D', '5069', '9917', '2035', '2353', '3601', 'H']

9579, 585, 4, 5069, 9917, 2035, 2353, 3601, 8