C12313211232233312111111312111133133313331333132232233122131233323111   >>    C1231321123223331211111131211113313331333133313223223312213123332311   <<    C12313211232233312111111312111133133313331333132232233122131233323113   >>      C12313211232233312111111312111133133313331333132232233122131233323112   >>