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: ['6001', 'r', 'B', '2189', 'W', '2965', 't', '7013', 'N', 'w', 'K', '3401', '7931', 'o', '4975', '2065', 'N', 'n', 'M', 'C', '8821', 'x', 'j', '9641', 'Q', 'f', 'q']

6001, 18, 2, 2189, 23, 2965, 20, 7013, 14, 23, 11, 3401, 7931, 15, 4975, 2065, 14, 14, 13, 3, 8821, 24, 10, 9641, 17, 6, 17