| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [verb] [det] [noun] | 7231 |
|
| 2 | [adj] [verb] [det] [noun] | 4766 |
|
| 3 | difficult [verb] [adj] [noun] | 460 |
|
| 4 | difficult [verb] [det] [noun] | 197 |
|
