Task: Program Execution
Input (English): 12, 19, ['1561', '6073', 'N', '2921', 'l', '4307', '1813', 'z', 'm', '3443', '4685', '8219', 'Q', '9781', 'R', '7039', '9839', 'N', '4383']
Output (English): 8219, Q, 9781, R, 7039, 9839, N, 4383