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