| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] difficult [to-vb] that [adj] | 6 |
|
| 2 | was difficult [verb] that [adj] | 6 |
|
| 3 | [was/were] difficult [verb] that [adj] | 6 |
|
| 4 | [was/were] difficult [verb] that [adj] | 6 |
|
| 5 | [was/were] difficult [verb] that [det] | 5 |
|
