Task: Program Execution
Input (English): y 6809 k P j Z 573 N l w 9035 4383 U z G r 1317 H B 1981 1213 2677 U I u 8015 P I
Output (English): 1, 3, 4, 5, 6, 8, 9, 10, 13, 14, 15, 16, 18, 19, 23, 24, 25, 27, 28