C12313211232233312111111312111133133313331333132232233122323113311221   >>    C1231321123223331211111131211113313331333133313223223312232311331122   <<    C12313211232233312111111312111133133313331333132232233122323113311223   >>      C12313211232233312111111312111133133313331333132232233122323113311222   >>