1. albero della castagna   poplar   chestnut   oak   beech   Hint Half-n-half Clue   2. olmo   oak   fir   elm   poplar   Half-n-half Clue   3. abete   oak   fir   birch   maple   Half-n-half Clue   4. acero   chestnut   beech   maple   cedar   Half-n-half Clue   5. quercia   oak   birch   chestnut   maple   Half-n-half Clue   6. cedro   poplar   cedar   oak   maple   Half-n-half Clue   7. betulla   birch   maple   elm   chestnut   Half-n-half Clue