| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we [vb base] [not/n't] been able | 51 |
|
| 2 | we have [not/n't] been able | 46 |
|
| 3 | we [vb base] not been able | 33 |
|
| 4 | we [vb base] n't been able | 18 |
|
| 5 | we 've [not/n't] been able | 5 |
|
