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: ['E', '9657', 'W', '8213', 't', '907', 'k', '8101', 'f', 'B', 'O', 'Q', '9385', '8295', '6659', 'o', 'F']

5, 9657, 23, 8213, 20, 907, 11, 8101, 6, 2, 15, 17, 9385, 8295, 6659, 15, 6