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: ['X', 'b', 't', '7269', 'e', 'e', '4743', 'd', '2225', '1899', 'v', 'y', 'k', '8449', 'c', '779', 'E', '4349', 'V', '4629', '8627', '2087', '8683']

24, 2, 20, 7269, 5, 5, 4743, 4, 2225, 1899, 22, 25, 11, 8449, 3, 779, 5, 4349, 22, 4629, 8627, 2087, 8683