| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [to-vb] [prep] the | 11817 |
|
| 2 | difficult [to-vb] [prep] the | 308 |
|
| 3 | [noun] difficult [to-vb] [prep] | 37 |
|
| 4 | [noun] difficult [prep] the | 16 |
|
