| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adj] for them | 178 |
|
| 2 | it [be] difficult for [pron] | 101 |
|
| 3 | it [be] difficult for [pers pn] | 88 |
|
| 4 | it [be] difficult for they | 17 |
|
| 5 | it [be] difficult [prep] them | 17 |
|
| 6 | it [be] difficult for them | 17 |
|
| 7 | it [be] difficult [prep] them | 17 |
|
| 8 | [pron] [be] difficult for them | 17 |
|
