Task: Program Execution
Input (English): 1869 3337 O 1553 5671 x 3729 Q 9197 x W W q X 9779 5595 5247 R J J 7925 8141 4657 I l L 1337 1485 7261 L 5639 T o 2227
Output (English): 1, 2, 4, 5, 7, 9, 15, 16, 17, 21, 22, 23, 27, 28, 29, 31, 34