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', 't', '4035', 'Q', 'r', 'p', 'r', '663', 't', 'N', '7439', '4549', 'f', '4423', '419', 'B', 'L', 'n', 'O', 'E', '2331', 'g', 'D', '1555', '5349', '3889', '309', 'k', '9541', '6065', '1497', '9627', '7841']

20, 20, 4035, 17, 18, 16, 18, 663, 20, 14, 7439, 4549, 6, 4423, 419, 2, 12, 14, 15, 5, 2331, 7, 4, 1555, 5349, 3889, 309, 11, 9541, 6065, 1497, 9627, 7841