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: ['7003', '305', 'Q', '1765', '9553', 'V', 'o', '4563', 'R', '5619', '3983', '2667']

7003, 305, 17, 1765, 9553, 22, 15, 4563, 18, 5619, 3983, 2667