Task: Program Execution
Input (English): y, 7089, 9959, 1217, 9943, r, x, 8339, 6351, 7157, 7879, E, 9785, 1279, 7941, 2191, 6113, r, S
Output (English): 2, 3, 4, 5, 8, 9, 10, 11, 13, 14, 15, 16, 17