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: ['P', 'j', 's', 'L', 'k', '83', '1829', 'N', '5707', 'w', 't', 't', 'o', '5135', 'l', 'J', 'p', 'V', '1127', 'x', 'k', 'Y', 'Q', '6979', '4907']

16, 10, 19, 12, 11, 83, 1829, 14, 5707, 23, 20, 20, 15, 5135, 12, 10, 16, 22, 1127, 24, 11, 25, 17, 6979, 4907