Task: Program Execution
Input (English): 4, 9, ['K', 'N', 'j', '3909', 'B', 'Z', 'p', '1531', 'X', '4479', 'Z', 'v', 'i', '5315', 'F', '3967', '665']
Output (English): X, 1531, p, Z, B, 3909