| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb past] [been] used [prep] [noun] | 6 |
|
| 2 | [Wh det] had [been] use [prep] [noun] | 6 |
|
| 3 | which [vb past] [been] use [prep] [noun] | 6 |
|
| 4 | [Wh det] [vb past] been use [prep] [noun] | 6 |
|
| 5 | [Wh det] [vb past] [been] use [prep] [noun] | 6 |
|
