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: ['773', '41', 'e', '6033', '6675', 'H', 'S', '5455']

773, 41, 5, 6033, 6675, 8, 19, 5455