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: ['m', 'Q', 'R', '7227', '4089', 'y', '9311', '3263', '2145', '4281', 'S', 'e', 'D', '1871', 'b', 'A', 'I', 'J', '329', 'V', '4249', 'H', '8721', 'D', '2529', '643', '1691', '5189', 'E', '375', '3629', 'f', 'c', 'g', '4689', '7443']

13, 17, 18, 7227, 4089, 25, 9311, 3263, 2145, 4281, 19, 5, 4, 1871, 2, 1, 9, 10, 329, 22, 4249, 8, 8721, 4, 2529, 643, 1691, 5189, 5, 375, 3629, 6, 3, 7, 4689, 7443