| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] difficult for [pers pn] [to-vb] [noun sg] | 5 |
|
| 2 | [be] difficult for [pron] [to-vb] [noun sg] | 5 |
|
| 3 | be difficult for [pron] [to-vb] [noun sg] | 5 |
|
