| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [not/n't] been seen for [adj] | 12 |
|
| 2 | have not been seen for [adj] | 12 |
|
| 3 | have not been seen for [adj] | 9 |
|
| 4 | have [adv] been seen for [num] | 8 |
|
| 5 | had [adv] been seen for [adj] | 7 |
|
