Task: Program Execution
Input (English): 1225, 3687, 7259, 9375, 5867, 8997, h, p, 8977, 4993, 6695, q, f, 8537, 8463, 9555, 4941, 7055, c, C, 4403, o
Output (English): 1, 2, 3, 4, 5, 6, 9, 10, 11, 14, 15, 16, 17, 18, 21