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: ['s', '2309', '777', 'a', '9749', 'V', 'b', 'U', '9441', 's', 'K', '9689', 'x', 'W', 'v', '5843', '1761', 't', 'q', '5543', 'B', '7101', 'v', '5595', 'O', 'o']

19, 2309, 777, 1, 9749, 22, 2, 21, 9441, 19, 11, 9689, 24, 23, 22, 5843, 1761, 20, 17, 5543, 2, 7101, 22, 5595, 15, 15