Task: Program Execution
Input (English): 8631, c, l, 1535, 1945, 7555, a, 3929, 6327, 5893, b, 4181, 1735, 6297, 347, b, 1109
Output (English): 1, 4, 5, 6, 8, 9, 10, 12, 13, 14, 15, 17