C11112331312111112111133133313331333132322121111331311331333132233132322333321   >>    C1111233131211111211113313331333133313232212111133131133133313223313232233332   <<    C11112331312111112111133133313331333132322121111331311331333132233132322333323   >>      C11112331312111112111133133313331333132322121111331311331333132233132322333322   >>