| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] be difficult for them | 17 |
|
| 2 | [pers pn] be difficult [prep] them | 17 |
|
| 3 | it be difficult [prep] them | 17 |
|
| 4 | [pers pn] be difficult for them | 17 |
|
| 5 | [pers pn] be difficult [prep] them | 17 |
|
| 6 | [pers pn] is difficult [prep] them | 13 |
|
