| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] been able [verb] [noun] | 26 |
|
| 2 | [verb] n't been able [verb] [noun] | 17 |
|
| 3 | [vb past] [not/n't] been able [verb] [noun] | 14 |
|
| 4 | [vb past] not been able [verb] [noun] | 14 |
|
| 5 | [vb past] n't been [adj] [verb] [noun] | 9 |
|
| 6 | [vb past] n't [been] able [verb] [noun] | 8 |
|
| 7 | [vb past] n't be able [verb] [noun] | 8 |
|
| 8 | [vb past] n't [be] able [verb] [noun] | 8 |
|
