1. Birke   poplar   oak   fir   birch   Hint Half-n-half Clue   2. Ahorn   beech   poplar   fir   maple   Half-n-half Clue   3. Eiche   oak   maple   beech   fir   Half-n-half Clue   4. Buche   cedar   beech   chestnut   elm   Half-n-half Clue   5. Zeder   cedar   poplar   pine   birch   Half-n-half Clue   6. Kastaniebaum   poplar   oak   fir   chestnut   Half-n-half Clue   7. Kiefer   fir   elm   chestnut   pine   Half-n-half Clue