| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb base] not been able to | 5 |
|
| 2 | [pers pn] [vb base] not been able to | 5 |
|
| 3 | [vb base] not been able [to-vb] to | 7 |
|
| 4 | [vb base] not been able [verb] to | 7 |
|
