| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] difficult for [pers pn] [to-vb] | 106 |
|
| 2 | it [be] difficult for [pers pn] | 88 |
|
| 3 | it [be] for [pers pn] [to-vb] | 76 |
|
| 4 | it difficult for [pers pn] [to-vb] | 63 |
|
