| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be difficult [verb] that [det] | 26 |
|
| 2 | [be] difficult [verb] that [det] | 26 |
|
| 3 | [be] difficult [to-vb] that [det] | 26 |
|
| 4 | is difficult [verb] that [det] | 14 |
|
| 5 | [is] difficult [verb] that [det] | 14 |
|
| 6 | [be] difficult [verb] that this | 12 |
|
| 7 | [be] difficult believe that [det] | 11 |
|
| 8 | [be] difficult to believe that [det] | 11 |
|
| 9 | [be] difficult [verb] that [det] | 7 |
|
| 10 | be difficult [verb] that [det] | 7 |
|
| 11 | was difficult [verb] that [det] | 5 |
|
| 12 | [was/were] difficult [verb] that [det] | 5 |
|
