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: ['G', '8101', '4633', '5281', 's', '4507', '6213', 'q', '4803', '4961', '8381', 'D', '4723', 'e', '2031', '2033', '5415', '3873', '4871']

7, 8101, 4633, 5281, 19, 4507, 6213, 17, 4803, 4961, 8381, 4, 4723, 5, 2031, 2033, 5415, 3873, 4871