| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult [verb] that [det] be | 8 |
|
| 2 | difficult [verb] that [adj] be | 8 |
|
| 3 | difficult [to-vb] that [adj] be | 8 |
|
| 4 | difficult [verb] that [adj] be | 8 |
|
| 5 | difficult [verb] that this be | 6 |
|
| 6 | difficult [verb] that this be | 6 |
|
