C11112331312111112111133133313331333133313223223313121111331322133313121221   >>    C1111233131211111211113313331333133313331322322331312111133132213331312122   <<    C11112331312111112111133133313331333133313223223313121111331322133313121223   >>      C11112331312111112111133133313331333133313223223313121111331322133313121222   >>