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: ['b', 'D', '3177', 'd', 'h', 'W', 'f', '1979', 'e', 'N', '6567', 'L', '8539', 'u', '2099', '5095', 'G', '8915', '2145', '7', '9373', '1847']

2, 4, 3177, 4, 8, 23, 6, 1979, 5, 14, 6567, 12, 8539, 21, 2099, 5095, 7, 8915, 2145, 7, 9373, 1847