| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult [to-vb] [conj] the [noun] | 41 |
|
| 2 | [adv] [adj] [to-vb] [coord] the [noun] | 20 |
|
| 3 | [adv] [adj] [to-vb] [coord] the [noun] | 18 |
|
| 4 | [adv] difficult [verb] [coord] the [noun] | 7 |
|
| 5 | [adv] difficult [to-vb] [coord] [art] [noun] | 7 |
|
| 6 | [adv] difficult [to-vb] [coord] the [noun] | 7 |
|
| 7 | [adv] difficult [to-vb] [coord] the [noun] | 7 |
|
| 8 | [adv] difficult [to-vb] [coord] [art] [noun] | 7 |
|
