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: ['9617', '7391', 'Z', '7961', '8191', 'I', 'N', '4497', 'E']

9617, 7391, 26, 7961, 8191, 9, 14, 4497, 5