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: ['k', 'N', 'g', '8435', '3395', '4369', '8403', '3921', '3917', 'E', 't', 'q', '6041']

11, 14, 7, 8435, 3395, 4369, 8403, 3921, 3917, 5, 20, 17, 6041