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: ['1349', '2999', 'b', 'I', '1523', 'D', '2073', '4449', '6927', 'Y', 'b', 'O', 'V', '7793', '6411', 'X', 'p', 'A', '7413', 'C', 'O', 'k', 'k', '8489', '6571', '2367', '8405']

1349, 2999, 2, 9, 1523, 4, 2073, 4449, 6927, 25, 2, 15, 22, 7793, 6411, 24, 16, 1, 7413, 3, 15, 11, 11, 8489, 6571, 2367, 8405