C1111233133313231133133313331333133313231323331333133313222233132233133333121   >>    C111123313331323113313331333133313331323132333133313331322223313223313333312   <<    C1111233133313231133133313331333133313231323331333133313222233132233133333123   >>      C1111233133313231133133313331333133313231323331333133313222233132233133333122   >>