1. piñón, diente de engranaje   valve   pump   sprocket   wheel   Hint Half-n-half Clue   2. inflador, bomba   tricycle   chain   pedal   pump   Half-n-half Clue   3. neumático   gear lever   handlebar   sprocket   tire   Half-n-half Clue   4. cable   engine   cable   exhaust pipe   motorcycle   Half-n-half Clue   5. motor   valve   tricycle   inner tube   engine   Half-n-half Clue   6. freno de mano   handbrake   lock   handlebar   pump   Half-n-half Clue   7. tubo de escape   cable   pedal   chain   exhaust pipe   Half-n-half Clue