1. じてんしゃ   airplane   train   bicycle   boat   Hint Half-n-half Clue   2. くるま   bicycle   train   boat   car   Half-n-half Clue   3. ひこうき   airplane   ship   car   boat   Half-n-half Clue   4. はんせん   car   bicycle   train   boat   Half-n-half Clue   5. ふね   ship   car   train   boat   Half-n-half Clue   6. でんしゃ、きしゃ   car   train   ship   boat   Half-n-half Clue