| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult [verb] the [noun] | 616 |
|
| 2 | difficult [to-vb] the [noun] | 613 |
|
| 3 | [adj] to see the [noun] | 566 |
|
| 4 | [adj] to see the [noun] | 526 |
|
| 5 | difficult to see [art] [noun] | 16 |
|
| 6 | difficult to see [art] [noun] | 16 |
|
| 7 | difficult to see the [noun] | 12 |
|
| 8 | difficult to see the [noun] | 12 |
|
| 9 | difficult see the [noun] | 12 |
|
