| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [verb] [adv] been able | 576 |
|
| 2 | [pron] [verb] n't been [adj] | 406 |
|
| 3 | [pron] [verb] [not/n't] been able | 340 |
|
| 4 | [pron] [verb] not been able | 340 |
|
| 5 | [pron] [verb] n't be able | 171 |
|
| 6 | [pron] [verb] n't [be] able | 171 |
|
| 7 | [pron] [verb] n't [been] able | 171 |
|
