| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [verb] that [noun pl] | 232 |
|
| 2 | it is difficult [verb] that | 97 |
|
| 3 | it is difficult [verb] [noun pl] | 44 |
|
| 4 | is difficult [verb] that [noun pl] | 7 |
|
