C111123313331323113313331323133313331311331311331333133313211212111   >>    C11112331333132311331333132313331333131133131133133313331321121211   <<    C111123313331323113313331323133313331311331311331333133313211212113   >>      C111123313331323113313331323133313331311331311331333133313211212112   >>