C11112331312111112111133133313331333132322121111331311223323213321   >>    C1111233131211111211113313331333133313232212111133131122332321332   <<    C11112331312111112111133133313331333132322121111331311223323213323   >>      C11112331312111112111133133313331333132322121111331311223323213322   >>