C12313211232233312111111312111133133313331323133313331122332321212132323221   >>    C1231321123223331211111131211113313331333132313331333112233232121213232322   <<    C12313211232233312111111312111133133313331323133313331122332321212132323223   >>      C12313211232233312111111312111133133313331323133313331122332321212132323222   >>