| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] difficult [to-vb] [noun] | 142 |
|
| 2 | it [is] [adj] [to-vb] people | 59 |
|
| 3 | it [is] difficult [to-vb] [n mass] | 13 |
|
| 4 | it [is] difficult [to-vb] people | 12 |
|
| 5 | [pers pn] [is] difficult [to-vb] people | 11 |
|
| 6 | it [be] difficult [to-vb] people | 11 |
|
| 7 | it [is] difficult [verb] people | 11 |
|
| 8 | [pron] [is] difficult [to-vb] people | 11 |
|
| 9 | it [is] difficult [to-vb] people | 11 |
|
