| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] for us | 163 |
|
| 2 | it be difficult for [pron] | 101 |
|
| 3 | it be difficult for [pers pn] | 88 |
|
| 4 | it be difficult for us | 19 |
|
| 5 | it [be] difficult for us | 19 |
|
| 6 | it be difficult for we | 19 |
|
| 7 | it be difficult [prep] us | 19 |
|
| 8 | it be difficult [prep] us | 19 |
|
| 9 | [pron] be difficult for us | 19 |
|
