| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [noun] [coord] | 64818 |
|
| 2 | difficult [verb] [noun] | 610 |
|
| 3 | difficult [verb] [coord] | 376 |
|
| 4 | difficult [noun] [coord] | 196 |
|
