Task: Program Execution
Input (English): b 4161 9611 8721 2157 811 m 795 5267 M j r M B G 2257 q 6373 313 8533 P 1961 6547 1687 U F S 1205 2141 s
Output (English): 2, 3, 4, 5, 6, 8, 9, 16, 18, 19, 20, 22, 23, 24, 28, 29