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: ['9061', '9995', 'r', 'F', '6569', '507', 'a', '247']

9061, 9995, 18, 6, 6569, 507, 1, 247