| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] n't been able | 226 |
|
| 2 | have n't [been] able | 226 |
|
| 3 | [vb base] n't [been] able | 102 |
|
| 4 | have n't [been] able | 102 |
|
| 5 | [vb past] n't [been] able | 98 |
|
| 6 | had n't [been] able | 98 |
|
| 7 | [vb -s] n't [been] able | 25 |
|
| 8 | has n't [been] able | 25 |
|
