C1231321123223331211111131211113313331333133313223223312212133331   >>    C123132112322333121111113121111331333133313331322322331221213333   <<    C1231321123223331211111131211113313331333133313223223312212133333   >>      C1231321123223331211111131211113313331333133313223223312212133332   >>