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: ['K', 'r', '8983', '777', 'S', 'z', '4049', 'M', '9739', '4949', '6359', '943', 'f', 'A', 'T', 'P', '8445', '2909', '5825', 'o', '9543', 'f', 'U', 'R', 'E', '2583', 'U', '3531', 'x', '7245', '1479', 'q', '4701', 'z']

11, 18, 8983, 777, 19, 26, 4049, 13, 9739, 4949, 6359, 943, 6, 1, 20, 16, 8445, 2909, 5825, 15, 9543, 6, 21, 18, 5, 2583, 21, 3531, 24, 7245, 1479, 17, 4701, 26