1. 座席   chain   tricycle   lock   seat   Hint Half-n-half Clue   2. 車輪   tricycle   wheel   exhaust pipe   gear lever   Half-n-half Clue   3. 電線   pedal   engine   cable   wheel   Half-n-half Clue   4. 鎖   cable   chain   helmet   lock   Half-n-half Clue   5. 安全帽子   horn   helmet   exhaust pipe   pedal   Half-n-half Clue   6. 機関   sprocket   engine   pedal   exhaust pipe   Half-n-half Clue   7. 警笛   tricycle   handbrake   gear lever   horn   Half-n-half Clue