C3123121111113313121111331333133313223313331333133313223313231322333231   >>    C312312111111331312111133133313331322331333133313331322331323132233323   <<    C3123121111113313121111331333133313223313331333133313223313231322333233   >>      C3123121111113313121111331333133313223313331333133313223313231322333232   >>