| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] is not difficult [verb] | 140 |
|
| 2 | [pers pn] is difficult [verb] that | 97 |
|
| 3 | [pers pn] is not [verb] that | 87 |
|
| 4 | is not difficult [verb] that | 15 |
|
