C12313211232233312111111312111133133313331333132232233122321322323311   >>    C1231321123223331211111131211113313331333133313223223312232132232331   <<    C12313211232233312111111312111133133313331333132232233122321322323313   >>      C12313211232233312111111312111133133313331333132232233122321322323312   >>