Task: Program Execution
Input (English): 7353 6503 7707 b 4865 r y 5053 4159 8393 r n 3123 P 3637 9257 Z H 939 5037 3455 J R P U K 6555 k l G 8539 4261 D C
Output (English): 1, 2, 3, 5, 8, 9, 10, 13, 15, 16, 19, 20, 21, 27, 31, 32