| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adj] [verb] that | 217 |
|
| 2 | it [adj] [verb] that | 182 |
|
| 3 | it difficult [verb] [conj] | 79 |
|
| 4 | [pron] difficult [verb] that | 41 |
|
| 5 | it difficult [verb] that | 41 |
|
