C312312111111331312111133133313331333131331123313331323231322331   >>    C31231211111133131211113313331333133313133112331333132323132233   <<    C312312111111331312111133133313331333131331123313331323231322333   >>      C312312111111331312111133133313331333131331123313331323231322332   >>