| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | high level [prep] [noun] [verb] | 85 |
|
| 2 | high level [prep] [noun] [vb pp] | 28 |
|
| 3 | high [noun] [prep] [noun] required | 9 |
|
| 4 | [adj] level [prep] [noun] required | 8 |
|
| 5 | high level [prep] [noun] require | 6 |
|
