| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have not been able | 340 |
|
| 2 | [noun pl] [pron] have not been | 189 |
|
| 3 | [noun pl] [pron] have been able | 45 |
|
| 4 | [noun pl] have not been able | 31 |
|
