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: ['t', '3883', 'k', '5593', 'N', 'B', '4667', 'I', 'a', '3029', 'Q', 'U', 'N', 'K', 'T', '6663', 'u', '8893', 's', 'U', 'j', 'j', '6765', '4281', 'Y', '7885', 'g']

20, 3883, 11, 5593, 14, 2, 4667, 9, 1, 3029, 17, 21, 14, 11, 20, 6663, 21, 8893, 19, 21, 10, 10, 6765, 4281, 25, 7885, 7