Task: Program Execution
Input (English): 2257 7133 R r 5259 G p r m 2971 E 881 8325 3217 g 8099 H u 3917 I f M C 8583 4073 7883 4781 O 475
Output (English): 3, 4, 6, 7, 8, 9, 11, 15, 17, 18, 20, 21, 22, 23, 28