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: ['7363', '6637', '1615', '8243', 'i', 'x', 'c', 'W', '1765', 'B', 'j', '2419', '9505', '3655', 'M', '5773', 'E']

7363, 6637, 1615, 8243, 9, 24, 3, 23, 1765, 2, 10, 2419, 9505, 3655, 13, 5773, 5