C11112331312111112111133133313331333132323133313331333133313113313223313122321   >>    C1111233131211111211113313331333133313232313331333133313331311331322331312232   <<    C11112331312111112111133133313331333132323133313331333133313113313223313122323   >>      C11112331312111112111133133313331333132323133313331333133313113313223313122322   >>