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: ['781', '1711', 'V', 'g', 'K', 'e', '589', '5759', '2301', 'u', '9593', 'm', 'S', 'k', '1571', '3799', 'U', 'e', '4025', 'y', 'F', 'Z', '7395', 'U', 'B', 'J', 'M', 'j', '8001', 'B']

781, 1711, 22, 7, 11, 5, 589, 5759, 2301, 21, 9593, 13, 19, 11, 1571, 3799, 21, 5, 4025, 25, 6, 26, 7395, 21, 2, 10, 13, 10, 8001, 2