C111123313331323113313331333133313331323112133313331311331311123231   >>    C11112331333132311331333133313331333132311213331333131133131112323   <<    C111123313331323113313331333133313331323112133313331311331311123233   >>      C111123313331323113313331333133313331323112133313331311331311123232   >>