C12313211232233312111111312111133133313331322122223112221322331   >>    C1231321123223331211111131211113313331333132212222311222132233   <<    C12313211232233312111111312111133133313331322122223112221322333   >>      C12313211232233312111111312111133133313331322122223112221322332   >>