| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adj] for us | 130 |
|
| 2 | it [is] difficult for [pron] | 78 |
|
| 3 | it [is] difficult for [pers pn] | 67 |
|
| 4 | it [is] difficult for we | 19 |
|
| 5 | it [be] difficult for us | 19 |
|
| 6 | [pron] [is] difficult for us | 19 |
|
| 7 | it [is] difficult for us | 19 |
|
| 8 | it [is] difficult [prep] us | 19 |
|
| 9 | it [is] difficult [prep] us | 19 |
|
