C111123313331323113313331333133313331323112133313331333132233132233221   >>    C11112331333132311331333133313331333132311213331333133313223313223322   <<    C111123313331323113313331333133313331323112133313331333132233132233223   >>      C111123313331323113313331333133313331323112133313331333132233132233222   >>