| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [Wh pn] [vb base] to [be] able | 5 |
|
| 2 | [Wh pn] [vb base] to [be] able [verb] | 10 |
|
| 3 | [Wh pn] [vb base] to [be] able [to-vb] | 10 |
|
