Task: Program Execution
Input (English): 2273 1531 d q 4921 o Q x k 6823 2357 4671 5383 4333 7975 1531 U f G 6809 I z 819 2633 4895 R T
Output (English): 3, 4, 6, 7, 8, 9, 17, 18, 19, 21, 22, 26, 27