| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb past] [been] [verb] [prep] [noun] | 417 |
|
| 2 | [Wh det] [verb] [been] establish [prep] [noun] | 10 |
|
| 3 | [pron] [vb past] [been] establish [prep] [noun] | 8 |
|
| 4 | [Wh det] [vb past] [be] establish [prep] [noun] | 7 |
|
