| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have not been able | 340 |
|
| 2 | [adv] [pron] have not been | 200 |
|
| 3 | [adv] [pron] have been able | 41 |
|
| 4 | [adv] have not been able | 17 |
|
