C12313211232233312111111312111133133313331333132232233122132331311   >>    C1231321123223331211111131211113313331333133313223223312213233131   <<    C12313211232233312111111312111133133313331333132232233122132331313   >>      C12313211232233312111111312111133133313331333132232233122132331312   >>