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