C1111233133313231133133313331333133311221123121111331333132233313223331   >>    C111123313331323113313331333133313331122112312111133133313223331322333   <<    C1111233133313231133133313331333133311221123121111331333132233313223333   >>      C1111233133313231133133313331333133311221123121111331333132233313223332   >>