C1231321123223331211111131211113313331333133313223223312222132223221   >>    C123132112322333121111113121111331333133313331322322331222213222322   <<    C1231321123223331211111131211113313331333133313223223312222132223223   >>      C1231321123223331211111131211113313331333133313223223312222132223222   >>