Task: Program Execution
Input (English): 819, 1461, 2087, 2767, z, 8973, 9751, 8119, 6497, 4167, c, v, 7831, 1381, r, q, 5557, 6815, t, 9633, v, 9949, 9917
Output (English): c, q, r, t, v, z