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: ['i', 'r', '6983', '8531', '9177', 'k', 'j', 'b', '547', 'Y', 'w', 'W', '6071', '7535', '6531', 'x', 'o', '2625', '739', '4767', '3295', 'a', 'S', 'v', '5015', 's', '9627', '8719', '7407', '7347', 'E']

9, 18, 6983, 8531, 9177, 11, 10, 2, 547, 25, 23, 23, 6071, 7535, 6531, 24, 15, 2625, 739, 4767, 3295, 1, 19, 22, 5015, 19, 9627, 8719, 7407, 7347, 5