| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] which [adj] [noun] | 1564 |
|
| 2 | [noun] [pron] required [noun] | 38 |
|
| 3 | [noun] [Wh det] required [noun] | 35 |
|
| 4 | [noun] which required [noun] | 35 |
|
