| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [not/n't] [been] [prep] [noun pl] | 5 |
|
| 2 | [vb past] [not/n't] been [prep] [noun pl] | 5 |
|
| 3 | had [not/n't] [been] [prep] [noun pl] | 5 |
|
