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: ['1831', 'd', 'r', '9233', 'Y', '9379', '9289', 'w', 'M', '6521', 'e', '5745', 'K', 'L', '2947', '8263', 'S', 'p', 'X', '2715', '4353', '415', '3961', '7357', '4733', 'f', 'f']

1831, 4, 18, 9233, 25, 9379, 9289, 23, 13, 6521, 5, 5745, 11, 12, 2947, 8263, 19, 16, 24, 2715, 4353, 415, 3961, 7357, 4733, 6, 6