| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] be difficult [to-vb] [adj] | 245 |
|
| 2 | [pers pn] be [adj] [to-vb] these | 137 |
|
| 3 | [pers pn] [be] difficult [to-vb] these | 17 |
|
| 4 | [pron] be difficult [to-vb] these | 17 |
|
| 5 | [pers pn] be difficult [verb] these | 17 |
|
