| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [noun] [noun] | 78795 |
|
| 2 | [prep] [noun prp] [noun] [noun] | 42913 |
|
| 3 | [prep] professor [noun] [noun] | 360 |
|
| 4 | [prep] professor [noun] [noun] | 327 |
|
