C12313211232233312111111312111133133313331323133313331122332321232111311111   >>    C1231321123223331211111131211113313331333132313331333112233232123211131111   <<    C12313211232233312111111312111133133313331323133313331122332321232111311113   >>      C12313211232233312111111312111133133313331323133313331122332321232111311112   >>