C12313211232233312111111312111133133313331323133313331122332321213212331211   >>    C1231321123223331211111131211113313331333132313331333112233232121321233121   <<    C12313211232233312111111312111133133313331323133313331122332321213212331213   >>      C12313211232233312111111312111133133313331323133313331122332321213212331212   >>