C11112331312111112111133133313331333133313132211312111113331312113313231322331   >>    C1111233131211111211113313331333133313331313221131211111333131211331323132233   <<    C11112331312111112111133133313331333133313132211312111113331312113313231322333   >>      C11112331312111112111133133313331333133313132211312111113331312113313231322332   >>