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: ['v', '5933', 'J', 'x', 'p', '5111', '209', '769', 'c', '1981', 'X', 'n', 'Y', '3531', '8009', 'a', 'W', '2529', 'V', '269']

22, 5933, 10, 24, 16, 5111, 209, 769, 3, 1981, 24, 14, 25, 3531, 8009, 1, 23, 2529, 22, 269