| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [be] difficult [prep] [noun pl] | 12 |
|
| 2 | [subord] it [be] difficult [prep] [noun pl] | 5 |
|
| 3 | it [vb mod] [be] difficult [prep] [noun pl] | 9 |
|
| 4 | it [modal v] [be] difficult [prep] [noun pl] | 9 |
|
| 5 | it [be] [adv] difficult [prep] [noun pl] | 28 |
|
| 6 | it [be] [adv] difficult [prep] [noun pl] | 26 |
|
| 7 | it [be] very difficult [prep] [noun pl] | 8 |
|
| 8 | it [be] very difficult [prep] [noun pl] | 8 |
|
| 9 | it [be] difficult [verb] [prep] [noun pl] | 13 |
|
| 10 | it [be] difficult [to-vb] [prep] [noun pl] | 13 |
|
| 11 | it [be] difficult [prep] [adj] [noun pl] | 14 |
|
| 12 | it [be] difficult [prep] [adj] [noun pl] | 11 |
|
| 13 | it [be] difficult [prep] the [noun pl] | 6 |
|
| 14 | it [be] difficult [prep] [art] [noun pl] | 6 |
|
| 15 | it [be] difficult [prep] the [noun pl] | 6 |
|
| 16 | it [be] difficult [prep] [art] [noun pl] | 6 |
|
| 17 | it [be] difficult [prep] [noun pl] [verb] | 21 |
|
| 18 | it [be] difficult [prep] [noun pl] [to-vb] | 20 |
|
| 19 | it [be] difficult [prep] [noun pl] [prep] | 5 |
|
| 20 | it [be] difficult [prep] [noun pl] [prep] | 5 |
|
