| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it be difficult for [pron] | 5 |
|
| 2 | [coord] it [be] difficult for [pron] | 5 |
|
| 3 | [coord] it is difficult for [pron] | 5 |
|
| 4 | [coord] it [is] difficult for [pron] | 5 |
|
