| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have n't seen them | 47 |
|
| 2 | have n't seen them | 33 |
|
| 3 | [vb base] n't seen them | 33 |
|
| 4 | [vb past] n't seen them | 10 |
|
| 5 | had n't seen them | 10 |
|
