| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] be difficult for | 80 |
|
| 2 | that it [vb mod] be difficult | 61 |
|
| 3 | that it be difficult for | 25 |
|
| 4 | that it [vb mod] be for | 9 |
|
