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: ['K', 'M', '3645', '3759', '2027', 'K', '7385', '9895', 'u', 'G', 'i', 'X', '9157', '7177', 'i', '7369', 'K', '9479', '3893']

11, 13, 3645, 3759, 2027, 11, 7385, 9895, 21, 7, 9, 24, 9157, 7177, 9, 7369, 11, 9479, 3893