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: ['8201', 'Z', '4925', 'D', '6681', 'z', 'P', 'h', '7529', '7525', 'B', 'f', 'K', 'p', '3109', '5747', 'M']

8201, 26, 4925, 4, 6681, 26, 16, 8, 7529, 7525, 2, 6, 11, 16, 3109, 5747, 13