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: ['d', '2245', '5719', 'X', 'k', 'Q', '2289', '647', '1391', 'P']

4, 2245, 5719, 24, 11, 17, 2289, 647, 1391, 16