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: ['u', 'K', 'J', 'd', 'w', 'D', 'a', 'I', 'i']

21, 11, 10, 4, 23, 4, 1, 9, 9