C1111121111331311211331333133313331333133313232212111133132323121   >>    C111112111133131121133133313331333133313331323221211113313232312   <<    C1111121111331311211331333133313331333133313232212111133132323123   >>      C1111121111331311211331333133313331333133313232212111133132323122   >>