| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is difficult for [pers pn] | 55 |
|
| 2 | is difficult for [pers pn] | 55 |
|
| 3 | is difficult for us | 19 |
|
| 4 | is difficult for them | 13 |
|
| 5 | is difficult for me | 11 |
|
| 6 | is difficult for him | 5 |
|
