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: ['K', 's', 'Z', '4233', '2475', '7993', '5217', '8919', 'w']

11, 19, 26, 4233, 2475, 7993, 5217, 8919, 23