C12313211232233312111111312111133133313223332233112333131232311   >>    C1231321123223331211111131211113313331322333223311233313123231   <<    C12313211232233312111111312111133133313223332233112333131232313   >>      C12313211232233312111111312111133133313223332233112333131232312   >>