| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] is [adv] difficult [to-vb] | 555 |
|
| 2 | [pers pn] is difficult [to-vb] such | 14 |
|
| 3 | is [adv] difficult [to-vb] such | 5 |
|
