| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [not/n't] [been] seen [prep] | 14 |
|
| 2 | have [not/n't] be seen [prep] | 14 |
|
| 3 | have [not/n't] been seen [prep] | 14 |
|
| 4 | have not [be] seen [prep] | 10 |
|
| 5 | have [not/n't] [be] seen in | 6 |
|
