| 1 | The back of the car was badly dented in a collision. | |
| 2 | The researchers inject pairs of electrons and holes into the germanium. | |
| 3 | His sunken cheeks slowly reddened and burned with miserable shame. | |
| 4 | I wish I were your second derivative so I could fill your concavities. | |
| 5 | Or do you see ridges, dents, or areas of unusual color or shape? |