Generation Rent

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Across
  1. 4. Menacing (1)
  2. 7. Very dirty (1)
  3. 8. Not changing (4)
  4. 9. Without a name (6)
Down
  1. 1. Barriers (3)
  2. 2. Air circulation (6)
  3. 3. Not very smart (2)
  4. 5. A counter-attack (8)
  5. 6. Areas (2)