| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have [adv] be able | 8 |
|
| 2 | who have [adv] [been] able | 8 |
|
| 3 | who have [adv] been able | 8 |
|
| 4 | who had [adv] [be] able | 5 |
|
