| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] not find | 269 |
|
| 2 | did not find | 269 |
|
| 3 | [vb past] not find | 171 |
|
| 4 | [vb past] n't find | 163 |
|
| 5 | had not find | 65 |
|
| 6 | [vb past] not found | 65 |
|
