C111123313331323113313331333133313331323323113313331311331313112111   >>    C11112331333132311331333133313331333132332311331333131133131311211   <<    C111123313331323113313331333133313331323323113313331311331313112113   >>      C111123313331323113313331333133313331323323113313331311331313112112   >>