| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] that [noun] | 1050 |
|
| 2 | it difficult [verb] [noun] | 119 |
|
| 3 | it difficult [verb] that | 41 |
|
| 4 | difficult [verb] that [noun] | 40 |
|
