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