| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is difficult [to-vb] the [noun] | 189 |
|
| 2 | it is difficult [to-vb] the [noun sg] | 156 |
|
| 3 | it is difficult [to-vb] the [noun pl] | 31 |
|
| 4 | it is difficult [to-vb] the conclusion | 25 |
|
| 5 | it is difficult [to-vb] the conclusion | 25 |
|
| 6 | it is difficult to avoid the [noun] | 20 |
|
| 7 | it is difficult to assess the [noun] | 16 |
|
| 8 | it is difficult to escape the [noun] | 8 |
|
| 9 | it is difficult to identify the [noun] | 7 |
|
| 10 | it is difficult to resist the [noun] | 7 |
|
| 11 | it is difficult [to-vb] the extent | 5 |
|
| 12 | it is difficult to understand the [noun] | 5 |
|
| 13 | it is difficult [to-vb] the extent | 5 |
|
| 14 | it is difficult to imagine the [noun] | 5 |
|
