1. pedale   tricycle   pedal   tire pressure   brake   Hint Half-n-half Clue   2. pressione delle gomme   chain   inner tube   tire pressure   spoke   Half-n-half Clue   3. pompa   valve   lock   pump   wheel   Half-n-half Clue   4. valvola   handlebar   valve   tire   engine   Half-n-half Clue   5. leva del cambio   pedal   sprocket   gear lever   tire   Half-n-half Clue   6. pneumatico   helmet   lock   pedal   tire   Half-n-half Clue   7. camera d'aria   pump   inner tube   tire   handlebar   Half-n-half Clue