Task: Program Execution
Input (English): c 507 O 1011 Q 2205 O 3055 2611 113 15 9679 4601 2517 7875 9813 397 9475 R d c e j 4973 G 5007 n b 1801 2963
Output (English): 1, 3, 5, 7, 19, 20, 21, 22, 23, 25, 27, 28