Task: Program Execution
Input (English): 7815 5985 7037 E 1553 g 4781 9099 x v 3147 2125 o 5767 U 7829 i R Q 3099 L 5601 v H 2837 3163 x 329 y C g
Output (English): 1, 2, 3, 5, 7, 8, 11, 12, 14, 16, 20, 22, 25, 26, 28