| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it was difficult [verb] that [adj] | 6 |
|
| 2 | [pron] was difficult [verb] that [adj] | 6 |
|
| 3 | [pers pn] was difficult [verb] that [adj] | 6 |
|
| 4 | it was difficult [verb] that [adj] | 6 |
|
