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: ['E', 'o', 'd', '3489', '5073', '6487', 'Y', 'g', 'T', '6541', 'z', '8183', 'c', 'X', 's', 'N', 'b', 'C', '9581', 'N', 'E', 'T', 'v', '9319']

5, 15, 4, 3489, 5073, 6487, 25, 7, 20, 6541, 26, 8183, 3, 24, 19, 14, 2, 3, 9581, 14, 5, 20, 22, 9319