| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb mod] [adv] [be] able to | 11 |
|
| 2 | they [vb mod] not [be] able to | 8 |
|
| 3 | they [vb mod] [not/n't] [be] able to | 8 |
|
| 4 | they [vb mod] n't [be] able to | 6 |
|
