| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] difficult [to-vb] [adj] [noun] | 137 |
|
| 2 | it [is] [adj] [to-vb] that [noun] | 81 |
|
| 3 | it [be] difficult [to-vb] that [noun] | 10 |
|
| 4 | [pron] [is] difficult [to-vb] that [noun] | 9 |
|
| 5 | it [is] difficult [verb] that [noun] | 9 |
|
| 6 | it [is] difficult [to-vb] that [noun] | 9 |
|
| 7 | [pers pn] [is] difficult [to-vb] that [noun] | 9 |
|
