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: ['m', 'i', '7577', 'I', '7195', 'B', '6697', 'x', '7771', '9919', '8419', 'k', 'K', 'J', 'K', 'l', 'R', '6165', 'h', 'i', 'h', 'U', 'i', '9969', 'b', 'H', 'V', '7395', '1927', '7973', '7337']

13, 9, 7577, 9, 7195, 2, 6697, 24, 7771, 9919, 8419, 11, 11, 10, 11, 12, 18, 6165, 8, 9, 8, 21, 9, 9969, 2, 8, 22, 7395, 1927, 7973, 7337