Task: Program Execution
Input (English): 7921 325 4307 3785 2221 D l t v M 1447 5039 9033 4961 4411 b 4771 2051 2371 a 8863 E U 4027 1725 6021 4169
Output (English): 6, 7, 8, 9, 10, 16, 20, 22, 23