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: ['1401', 't', 'A', 'q', 'C', '7289', '289', 'X', 'n', '5189', '413', '687', '4205', 'N', '3887', 'b', '2903', '7543', 'h', 'h', '8119', 'S', '5749', '9497', '7997', '2405', '6191', 'G', '6377', '9895', '1565', 'l', 't', 'g', '341', 'g', '4251', '4231']

1401, 20, 1, 17, 3, 7289, 289, 24, 14, 5189, 413, 687, 4205, 14, 3887, 2, 2903, 7543, 8, 8, 8119, 19, 5749, 9497, 7997, 2405, 6191, 7, 6377, 9895, 1565, 12, 20, 7, 341, 7, 4251, 4231