C12313211232233312111111312111133133313331323133313331122332321231213311323311   >>    C1231321123223331211111131211113313331333132313331333112233232123121331132331   <<    C12313211232233312111111312111133133313331323133313331122332321231213311323313   >>      C12313211232233312111111312111133133313331323133313331122332321231213311323312   >>