| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] is not difficult [to-vb] that | 15 |
|
| 2 | [pers pn] is not difficult [to-vb] that | 15 |
|
| 3 | it is not difficult [to-vb] that | 15 |
|
| 4 | [pers pn] is not difficult to see that | 6 |
|
