| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not been seen for | 17 |
|
| 2 | [verb] not been seen for | 12 |
|
| 3 | had not been seen for | 10 |
|
| 4 | [vb past] not been seen for | 10 |
|
| 5 | has not been seen for | 5 |
|
| 6 | [verb] n't been seen for | 5 |
|
| 7 | [vb -s] not been seen for | 5 |
|
