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: ['493', 'l', 'C', '237', 'G', '9301', 'a', '3817', 'Q', 'o', 'g', '8063']

493, 12, 3, 237, 7, 9301, 1, 3817, 17, 15, 7, 8063