| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adj] for | 1673 |
|
| 2 | it difficult [prep] | 255 |
|
| 3 | [pron] difficult for | 218 |
|
| 4 | [pers pn] difficult for | 217 |
|
| 5 | it difficult for | 217 |
|
