C1231321123223331211111131211113313331333133313223223312212121221   >>    C123132112322333121111113121111331333133313331322322331221212122   <<    C1231321123223331211111131211113313331333133313223223312212121223   >>      C1231321123223331211111131211113313331333133313223223312212121222   >>