C11112331312111112111133133313331333133313223223311211331311211211311   >>    C1111233131211111211113313331333133313331322322331121133131121121131   <<    C11112331312111112111133133313331333133313223223311211331311211211313   >>      C11112331312111112111133133313331333133313223223311211331311211211312   >>