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: ['1247', '8701', '8653', 'Z', '7249', 'h', '8975', 'p']

1247, 8701, 8653, 26, 7249, 8, 8975, 16