| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] difficult [verb] just | 12 |
|
| 2 | be difficult [verb] just | 12 |
|
| 3 | [be] difficult [to-vb] just | 12 |
|
| 4 | is difficult [verb] just | 9 |
|
