C1111121111331311211331333133313331333133313231331121111331333133313232221121   >>    C111112111133131121133133313331333133313331323133112111133133313331323222112   <<    C1111121111331311211331333133313331333133313231331121111331333133313232221123   >>      C1111121111331311211331333133313331333133313231331121111331333133313232221122   >>