| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [to-vb] [conj] the [noun] | 1693 |
|
| 2 | difficult [to-vb] [conj] [art] [noun] | 144 |
|
| 3 | difficult [to-vb] [conj] [art] [noun] | 144 |
|
| 4 | difficult [verb] [conj] the [noun] | 109 |
|
| 5 | difficult [to-vb] [conj] the [noun] | 108 |
|
