C12313211232233312111111312111133133313331333132232233122132233312231   >>    C1231321123223331211111131211113313331333133313223223312213223331223   <<    C12313211232233312111111312111133133313331333132232233122132233312233   >>      C12313211232233312111111312111133133313331333132232233122132233312232   >>