Task: Program Execution
Input (English): f r 3657 j 5655 8619 z u 4659 4253 3797 9943 911 4007 J M 8227 2383 I 7977 291 645 R o K p p C 5351 W
Output (English): 1, 2, 4, 7, 8, 15, 16, 19, 23, 24, 25, 26, 27, 28, 30