Task: Program Execution
Input (English): o 143 c k 8425 S 7033 P e s 313 Q 4835 2409 6225 8465 f b x B y 1201 9801 4753 2631 4835 9409
Output (English): 1, 3, 4, 6, 8, 9, 10, 12, 17, 18, 19, 20, 21