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: ['1197', 'L', '9927', '2405', '5123', '2371', 'y', '2781', '549', '8363', '9347', '4283', 'j', '2183', 's', 'K', 'Q', '9547', 's', '8325', 'S', 'T', '8837']

1197, 12, 9927, 2405, 5123, 2371, 25, 2781, 549, 8363, 9347, 4283, 10, 2183, 19, 11, 17, 9547, 19, 8325, 19, 20, 8837