C12313211232233312111111312111133133313331323133313331122332321123122222213321   >>    C1231321123223331211111131211113313331333132313331333112233232112312222221332   <<    C12313211232233312111111312111133133313331323133313331122332321123122222213323   >>      C12313211232233312111111312111133133313331323133313331122332321123122222213322   >>