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: ['3277', 'v', 'H', '7069', '9601', '1099', 'u']

3277, 22, 8, 7069, 9601, 1099, 21