| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [noun] [prep] [noun] required | 348 |
|
| 2 | the level [prep] [noun] [verb] | 326 |
|
| 3 | the level [prep] [noun] [vb pp] | 188 |
|
| 4 | the level [prep] [noun] require | 41 |
|
| 5 | [art] level [prep] [noun] required | 40 |
|
| 6 | the level [prep] [noun] required | 40 |
|
| 7 | [art] level [prep] [noun] required | 40 |
|
