| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] that [adj] [noun] | 570 |
|
| 2 | it difficult [verb] [adj] [noun] | 65 |
|
| 3 | difficult [verb] that [adj] [noun] | 19 |
|
| 4 | it difficult [verb] that [adj] | 8 |
|
| 5 | it difficult [verb] that [noun] | 7 |
|
