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