| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] very difficult [to-vb] [coord] | 5 |
|
| 2 | [pers pn] [be] very difficult [to-vb] [coord] | 5 |
|
| 3 | [be] [adv] very difficult [to-vb] [coord] | 5 |
|
| 4 | [be] very difficult [to-vb] [coord] [verb] | 5 |
|
