C111123313331323113313331333133313331323112133313331311331322311321   >>    C11112331333132311331333133313331333132311213331333131133132231132   <<    C111123313331323113313331333133313331323112133313331311331322311323   >>      C111123313331323113313331333133313331323112133313331311331322311322   >>