C12313211232233312111111312111133133313331333132232233122231321231   >>    C1231321123223331211111131211113313331333133313223223312223132123   <<    C12313211232233312111111312111133133313331333132232233122231321233   >>      C12313211232233312111111312111133133313331333132232233122231321232   >>