1. ヒマラヤスギ   poplar   pine   cedar   elm   Hint Half-n-half Clue   2. マツ   poplar   pine   chestnut   fir   Half-n-half Clue   3. ニレ.   pine   maple   elm   birch   Half-n-half Clue   4. ポプラ.   pine   poplar   beech   elm   Half-n-half Clue   5. ブナ.   chestnut   beech   fir   poplar   Half-n-half Clue   6. モミ   fir   birch   maple   pine   Half-n-half Clue   7. カエデ.   birch   maple   elm   poplar   Half-n-half Clue