Task: Program Execution
Input (English): 8663 w 621 6817 6819 x 5419 A P 1001 X x H M u 8269 5505 535 8253 J x 2743 415 407 3933 5547 7667 9127 i 1607 H 8061
Output (English): 2, 6, 8, 9, 11, 12, 13, 14, 15, 20, 21, 29, 31