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: ['1843', '8405', '4371', '1785', 'k', 'G', 'S', '425', 'o', 'P', '9135', 'C', '6469', '6207', '2071', '945', '5345', '6361', '673', 'I', '2913', 'd', 'p', '4811', 'P', 't', 'H', '8477', 'i', 'm', 'N', 'g', '8017', 'v', 'e', '817']

1843, 8405, 4371, 1785, 11, 7, 19, 425, 15, 16, 9135, 3, 6469, 6207, 2071, 945, 5345, 6361, 673, 9, 2913, 4, 16, 4811, 16, 20, 8, 8477, 9, 13, 14, 7, 8017, 22, 5, 817