| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has had a [noun] [prep] | 82 |
|
| 2 | has a significant [noun] [prep] | 26 |
|
| 3 | had a significant [noun] [prep] | 24 |
|
| 4 | has had a significant [noun] | 10 |
|
