WORDSSPPIRIRAAL L

Starting from 1, fill in the grid clockwise with four-letter words. The last letter of each word becomes the first letter of the next to reveal a flammable gas. 1. 2. 3. 4. 5. 6. 7. 8.

Unmarried woman Croon

Great delight Engrave

Warmth

Scented powder Harvest

Fossil fuel 9. Pleasure trip

10. Destroy

11. Without legal force 12. Produces eggs

13. Kind, type

14. Nonsense

15. Fifty per cent

16. Fail totally