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: ['k', '5793', 'X', 'G', '1731', '373', '6163', 'U', 'D', 'W', 'n', 'v', '13', '6247', 'L', 'C', '7075', 'v', 'c', 'd']

11, 5793, 24, 7, 1731, 373, 6163, 21, 4, 23, 14, 22, 13, 6247, 12, 3, 7075, 22, 3, 4