1. 機関   engine   gear lever   pedal   shock absorber   Hint Half-n-half Clue   2. 鎖   chain   wheel   sprocket   tricycle   Half-n-half Clue   3. 鎖止め   seat   sprocket   exhaust pipe   helmet   Half-n-half Clue   4. 緩衝器   chain   shock absorber   wheel   tire pressure   Half-n-half Clue   5. 三輪車   helmet   shock absorber   wheel   tricycle   Half-n-half Clue   6. 電線   tire pressure   gear lever   cable   horn   Half-n-half Clue   7. 錠   lock   pedal   seat   shock absorber   Half-n-half Clue