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