| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [adj] [to-vb] such | 24 |
|
| 2 | it is [adv] [adj] [to-vb] such | 20 |
|
| 3 | it is [adv] difficult [to-vb] such | 5 |
|
| 4 | it is [adv] difficult [to-vb] such | 5 |
|
