C12313211232233312111111312111133133313331333132232233122322121331   >>    C1231321123223331211111131211113313331333133313223223312232212133   <<    C12313211232233312111111312111133133313331333132232233122322121333   >>      C12313211232233312111111312111133133313331333132232233122322121332   >>