| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult [coord] the [noun] | 12 |
|
| 2 | difficult [coord] the [noun] | 12 |
|
| 3 | difficult [coord] the [noun sg] | 9 |
|
| 4 | difficult and the [noun] | 9 |
|
