| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is hard [to-vb] | 691 |
|
| 2 | which is hard [to-vb] | 14 |
|
| 3 | which it is [to-vb] | 13 |
|
| 4 | which it is hard | 11 |
|
