1. 鎖   handbrake   chain   seat   exhaust pipe   Hint Half-n-half Clue   2. 非常ブレーキ   handbrake   pedal   lock   engine   Half-n-half Clue   3. 座席   seat   cable   engine   tire pressure   Half-n-half Clue   4. 安全帽子   wheel   helmet   chain   shock absorber   Half-n-half Clue   5. 警笛   helmet   cable   horn   shock absorber   Half-n-half Clue   6. 鎖止め   chain   lock   shock absorber   sprocket   Half-n-half Clue   7. 電線   cable   tricycle   exhaust pipe   horn   Half-n-half Clue