Task: Program Execution
Input (English): 2913 6387 2531 l 3163 S 4939 C m 3505 9681 9563 7779 6095 L 2683 b 5315 P c a u O 929 8815 5257 Y 3471 571 2111 T 3737
Output (English): 4, 6, 8, 9, 15, 17, 19, 20, 21, 22, 23, 27, 31