| 1 | The search team carefully examined every clue. | |
| 2 | We need more clues to solve this puzzle. | |
| 3 | The case seems to have hit a dead end with no clues. | |
| 4 | The clues left by the drug addict pointed to another suspect. | |
| 5 | The police are investigating the case and hope to find clues from the criminal methods. |