1. はいきかん   exhaust pipe   sprocket   shock absorber   gear lever   Hint Half-n-half Clue   2. きかん   exhaust pipe   gear lever   shock absorber   engine   Half-n-half Clue   3. あんぜんぼうし   tire pressure   wheel   helmet   tricycle   Half-n-half Clue   4. でんせん   cable   horn   sprocket   lock   Half-n-half Clue   5. けいてき   cable   tricycle   exhaust pipe   horn   Half-n-half Clue   6. タイヤくうきあつ   seat   tricycle   sprocket   tire pressure   Half-n-half Clue   7. へんそくレバー   horn   gear lever   handbrake   tricycle   Half-n-half Clue