| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be difficult [to-vb] [conj] the [noun] | 60 |
|
| 2 | be [adj] [to-vb] [coord] the [noun] | 44 |
|
| 3 | be [adj] [to-vb] [coord] the [noun] | 40 |
|
| 4 | be difficult [to-vb] [coord] [art] [noun] | 9 |
|
| 5 | be difficult [to-vb] [coord] [art] [noun] | 9 |
|
| 6 | be difficult [to-vb] [coord] the [noun] | 7 |
|
| 7 | be difficult [to-vb] [coord] the [noun] | 7 |
|
| 8 | be difficult [verb] [coord] the [noun] | 7 |
|
| 9 | [be] difficult [to-vb] [coord] the [noun] | 7 |
|
