Task: Program Execution
Input (English): I Y M 4885 U 3877 9857 W X j 8817 K G 481 443 k 6875 6547 m 2753 N F d 6713 c x k
Output (English): 1, 2, 3, 5, 8, 9, 10, 12, 13, 16, 19, 21, 22, 23, 25, 26, 27