| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [prep] [adj] [noun] | 3150 |
|
| 2 | [verb] it difficult [prep] [noun] | 62 |
|
| 3 | [verb] it difficult [prep] [adj] | 35 |
|
| 4 | it difficult [prep] [adj] [noun] | 24 |
|
