Task: Program Execution
Input (English): 3421, 4791, 2681, g, 4267, z, R, L, I, z, R, 9633, Y, 7469, W, 9597, D, M, v, 7967, 2975, 5227, 6737
Output (English): 1, 2, 3, 5, 12, 14, 16, 20, 21, 22, 23