| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [conj] the [noun] | 6993 |
|
| 2 | difficult [to-vb] the [noun] | 613 |
|
| 3 | difficult [to-vb] [conj] the | 155 |
|
| 4 | difficult [to-vb] [conj] [noun] | 113 |
|
| 5 | difficult [conj] the [noun] | 71 |
|
