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: ['q', '1859', 'z', 'E', 'M', '5685', '5589', 'P', 'E', 'i', '161', '5529', 'T', '3253', 'i', '9029', 'g', 's', 'N', '2019', '4825', 'p', '1215', 'r', '25']

17, 1859, 26, 5, 13, 5685, 5589, 16, 5, 9, 161, 5529, 20, 3253, 9, 9029, 7, 19, 14, 2019, 4825, 16, 1215, 18, 25