1. pompa   handlebar   tricycle   pump   wheel   Hint Half-n-half Clue   2. catena   lock   chain   handbrake   gear lever   Half-n-half Clue   3. corno   horn   cable   engine   chain   Half-n-half Clue   4. camera d'aria   spoke   inner tube   tire   scooter   Half-n-half Clue   5. manubrio   tire   engine   handbrake   handlebar   Half-n-half Clue   6. pneumatico   sprocket   lock   scooter   tire   Half-n-half Clue   7. triciclo   scooter   pedal   tire pressure   tricycle   Half-n-half Clue