C11112331312111112111133133313331333132322121111331311331333133313331312321221   >>    C1111233131211111211113313331333133313232212111133131133133313331333131232122   <<    C11112331312111112111133133313331333132322121111331311331333133313331312321223   >>      C11112331312111112111133133313331333132322121111331311331333133313331312321222   >>