| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb base] it difficult [verb] | 80 |
|
| 2 | [conj] [noun] [vb base] it [verb] | 27 |
|
| 3 | [conj] [vb base] it difficult [verb] | 20 |
|
| 4 | [conj] [noun] [vb base] it difficult | 13 |
|
