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: ['d', '1195', '1813', 'i', '579', 'R', '6427', 'C', 'F', 'I', 'V', '4389', 'p', '89', 'E', 'b', '4599']

4, 1195, 1813, 9, 579, 18, 6427, 3, 6, 9, 22, 4389, 16, 89, 5, 2, 4599