Task: Program Execution
Input (English): c O 8995 K J V G 8141 h 5627 r 2699 8259 5025 z 5841 J p z W 421 3241 2939 6951 3751 6333 2523 y u
Output (English): 1, 2, 4, 5, 6, 7, 9, 11, 15, 17, 18, 19, 20, 28, 29