| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] not [been] able | 139 |
|
| 2 | [adv] [pron] [vb past] not [been] | 96 |
|
| 3 | [adv] [pron] [vb past] [been] able | 16 |
|
| 4 | [adv] [vb past] not [been] able | 5 |
|
