Task: Program Execution
Input (English): 12, 16, ['6873', '1599', 'f', 'R', '7501', 'S', '5209', '5635', '4169', '5025', 'i', '393', 'V', '4749', 'Z', 'z', '8151', '7873', '6109', 'n']
Output (English): z, Z, 4749, V, 393