C1111121111331311211331333133313331333133313231331121111331322333121   >>    C111112111133131121133133313331333133313331323133112111133132233312   <<    C1111121111331311211331333133313331333133313231331121111331322333123   >>      C1111121111331311211331333133313331333133313231331121111331322333122   >>