| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [not/n't] difficult [verb] that | 15 |
|
| 2 | is not difficult [verb] that | 15 |
|
| 3 | is [not/n't] difficult [to-vb] that | 15 |
|
| 4 | is [not/n't] difficult see that | 6 |
|
| 5 | is [not/n't] difficult to see that | 6 |
|
