| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is difficult for [pers pn] [verb] | 39 |
|
| 2 | [pers pn] is difficult for [pers pn] [to-vb] | 39 |
|
| 3 | [pers pn] is difficult for us [verb] | 12 |
|
| 4 | [pers pn] is difficult for them [verb] | 12 |
|
| 5 | [pers pn] is difficult for me [verb] | 5 |
|
