| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] difficult for them | 17 |
|
| 2 | [pers pn] be difficult for them | 17 |
|
| 3 | [pers pn] [is] difficult for them | 14 |
|
| 4 | [pers pn] is difficult for them | 13 |
|
