C111123313331323113313331323133313331311331311331333133313232132311321   >>    C11112331333132311331333132313331333131133131133133313331323213231132   <<    C111123313331323113313331323133313331311331311331333133313232132311323   >>      C111123313331323113313331323133313331311331311331333133313232132311322   >>