C12313211232233312111111312111133133313331333132232233122131323221231   >>    C1231321123223331211111131211113313331333133313223223312213132322123   <<    C12313211232233312111111312111133133313331333132232233122131323221233   >>      C12313211232233312111111312111133133313331333132232233122131323221232   >>