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: ['Z', 'T', 'u', 'e', '3267', 'b', 'G', '5871', '6443', '5743', 'x', 'p', '35', 'I', '2137', '4341', '4181', '2173', 'l', 'a', 'a', 'Q', '293', '5219', 'h', '5961', 'b', 'n', 'A', 'w', '2999', 'D', 'r', '199', 'L']

26, 20, 21, 5, 3267, 2, 7, 5871, 6443, 5743, 24, 16, 35, 9, 2137, 4341, 4181, 2173, 12, 1, 1, 17, 293, 5219, 8, 5961, 2, 14, 1, 23, 2999, 4, 18, 199, 12