| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | an important [noun] [prep] | 3476 |
|
| 2 | [vb -s] an [noun] [prep] | 2440 |
|
| 3 | [vb -s] an important [noun] | 383 |
|
| 4 | [vb -s] important [noun] [prep] | 133 |
|
