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', 'm', '3393', '4937', '9831', '5917', '3379', '3909', 'm', 'z', 'P', 'F', '2701', 'n']

9617, 13, 3393, 4937, 9831, 5917, 3379, 3909, 13, 26, 16, 6, 2701, 14