| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of [noun] required | 519 |
|
| 2 | standard of [noun] [verb] | 213 |
|
| 3 | standard of [noun] [vb pp] | 102 |
|
| 4 | standard of [noun] require | 15 |
|
| 5 | standard [prep] [noun] required | 14 |
|
