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