| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] difficult [to-vb] such | 6 |
|
| 2 | it is [adv] difficult [to-vb] such | 5 |
|
| 3 | it is difficult [to-vb] [adv] such | 11 |
|
| 4 | it is difficult [to-vb] how such | 11 |
|
| 5 | it is difficult [to-vb] [Wh adv] such | 11 |
|
| 6 | it is difficult [to-vb] how such | 11 |
|
| 7 | it is difficult [to-vb] such [noun] | 8 |
|
| 8 | it is difficult [to-vb] such [art] | 5 |
|
| 9 | it is difficult [to-vb] such a | 5 |
|
| 10 | it is difficult [to-vb] such [art] | 5 |
|
