1. 飛行機   airplane   train   boat   ship   Hint Half-n-half Clue   2. 船   train   airplane   car   ship   Half-n-half Clue   3. 自転車   bicycle   airplane   car   train   Half-n-half Clue   4. 車   ship   airplane   train   car   Half-n-half Clue   5. 電車、汽車   boat   train   car   airplane   Half-n-half Clue   6. 帆船   bicycle   boat   train   ship   Half-n-half Clue