| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [verb] that [adj] | 1652 |
|
| 2 | it [be] difficult [verb] [adj] | 246 |
|
| 3 | it [be] difficult [verb] that | 132 |
|
| 4 | [be] difficult [verb] that [adj] | 32 |
|
| 5 | it difficult [verb] that [adj] | 8 |
|
