| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they [verb] n't [been] able | 6 |
|
| 2 | they [verb] n't [been] able [to-vb] | 14 |
|
| 3 | they [verb] n't [been] able [verb] | 14 |
|
