C12313211232233312111111312111133133313331323133313331122332321121231313323221   >>    C1231321123223331211111131211113313331333132313331333112233232112123131332322   <<    C12313211232233312111111312111133133313331323133313331122332321121231313323223   >>      C12313211232233312111111312111133133313331323133313331122332321121231313323222   >>