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: ['6419', 'U', '2255', '2031', 'i', 'j', '8551', 'B', 'A', 'F', '4469', '6597', '9297', '5359', 'N', 'O', '5243', '77', 'h', '4703', '3313', 'B', '9283', '9349', '1331', 'd', 'G', 'q']
Output:
6419, 21, 2255, 2031, 9, 10, 8551, 2, 1, 6, 4469, 6597, 9297, 5359, 14, 15, 5243, 77, 8, 4703, 3313, 2, 9283, 9349, 1331, 4, 7, 17