C11112331312111112111133133313331333132322121111331311331333132212321   >>    C1111233131211111211113313331333133313232212111133131133133313221232   <<    C11112331312111112111133133313331333132322121111331311331333132212323   >>      C11112331312111112111133133313331333132322121111331311331333132212322   >>