1. pression des pneus   shock absorber   exhaust pipe   wheel   tire pressure   Hint Half-n-half Clue   2. pignon   seat   sprocket   wheel   handlebar   Half-n-half Clue   3. pompe   pump   pedal   seat   gear lever   Half-n-half Clue   4. scooter   wheel   chain   tire   scooter   Half-n-half Clue   5. chambre à air   inner tube   engine   tire   handbrake   Half-n-half Clue   6. tricycle   tricycle   valve   horn   gear lever   Half-n-half Clue   7. soupape   sprocket   valve   lock   cable   Half-n-half Clue