C11112331312111112111133133313331333133313223223313331331121332321   >>    C1111233131211111211113313331333133313331322322331333133112133232   <<    C11112331312111112111133133313331333133313223223313331331121332323   >>      C11112331312111112111133133313331333133313223223313331331121332322   >>