C1231321123223331211111131211113313331333133313223223312212123331   >>    C123132112322333121111113121111331333133313331322322331221212333   <<    C1231321123223331211111131211113313331333133313223223312212123333   >>      C1231321123223331211111131211113313331333133313223223312212123332   >>