| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of [noun] required | 519 |
|
| 2 | types of [noun] [verb] | 476 |
|
| 3 | types of [noun] [vb pp] | 171 |
|
| 4 | [noun pl] of [noun] required | 78 |
|
| 5 | type of [noun] required | 41 |
|
| 6 | types of [noun] require | 14 |
|
| 7 | types [prep] [noun] required | 10 |
|
