1. roble   birch   elm   fir   oak   Hint Half-n-half Clue   2. haya   maple   beech   birch   pine   Half-n-half Clue   3. abedul   birch   poplar   maple   beech   Half-n-half Clue   4. cedro   pine   cedar   chestnut   fir   Half-n-half Clue   5. olmo   beech   elm   pine   oak   Half-n-half Clue   6. pino   pine   elm   cedar   poplar   Half-n-half Clue   7. abeto   fir   poplar   cedar   pine   Half-n-half Clue