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: ['h', 'J', '4459', 'r', '7611', '3365', '4549', 'E', 'V', 'j', '4485', 'd', 'f', '7139']

8, 10, 4459, 18, 7611, 3365, 4549, 5, 22, 10, 4485, 4, 6, 7139