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', 'B', 'J', '1443', 'F', 'L', 'H', '7945', 'j']

4, 2, 10, 1443, 6, 12, 8, 7945, 10