C11112331312111112111133133313331333133313331333133313331333131133131232212321   >>    C1111233131211111211113313331333133313331333133313331333133313113313123221232   <<    C11112331312111112111133133313331333133313331333133313331333131133131232212323   >>      C11112331312111112111133133313331333133313331333133313331333131133131232212322   >>