| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adj] [verb] that | 1800 |
|
| 2 | it is difficult [verb] [conj] | 164 |
|
| 3 | it be difficult [verb] that | 132 |
|
| 4 | it [be] difficult [verb] that | 132 |
|
| 5 | it [is] difficult [verb] that | 102 |
|
| 6 | it is difficult [verb] that | 97 |
|
| 7 | [pron] is difficult [verb] that | 97 |
|
| 8 | it is difficult [verb] [that] | 97 |
|
