| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] [is] [adv] difficult for them | 9 |
|
| 2 | [pers pn] [is] [adv] difficult for them | 9 |
|
| 3 | [pers pn] [is] very difficult for them | 6 |
|
| 4 | [pers pn] [is] very difficult for them | 6 |
|
| 5 | [pers pn] [is] difficult for them [verb] | 12 |
|
| 6 | [pers pn] [is] difficult for them [to-vb] | 12 |
|
