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: ['521', '5289', '1871', 'X', 'x', 'd', '4591', '1931', '6663', 'i', 'E', '8101', 'q', '6539', 'y', 'C', '4749', 'T', 'A', 'I', '4033', '4561', '8811', 'V', 'j', 'l', 'i', 'u', '2601', '4541', '1901', '2717', '1829', 'L', 'C', 'w', 'm', 't', '5283', '327']

521, 5289, 1871, 24, 24, 4, 4591, 1931, 6663, 9, 5, 8101, 17, 6539, 25, 3, 4749, 20, 1, 9, 4033, 4561, 8811, 22, 10, 12, 9, 21, 2601, 4541, 1901, 2717, 1829, 12, 3, 23, 13, 20, 5283, 327