| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] difficult for [pers pn] [to-vb] | 54 |
|
| 2 | [is] difficult for [pers pn] [verb] | 54 |
|
| 3 | is difficult for [pers pn] [verb] | 41 |
|
| 4 | [is] difficult for us [verb] | 17 |
|
| 5 | 's difficult for [pers pn] [verb] | 13 |
|
| 6 | [is] difficult for them [verb] | 12 |
|
| 7 | [is] difficult for me [verb] | 10 |
|
| 8 | [is] difficult for you [verb] | 7 |
|
