C111123313331323113313331333133313331323112133313331333132323213222311111   >>    C11112331333132311331333133313331333132311213331333133313232321322231111   <<    C111123313331323113313331333133313331323112133313331333132323213222311113   >>      C111123313331323113313331333133313331323112133313331333132323213222311112   >>