| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] difficult [to-vb] that | 28 |
|
| 2 | it is [adv] difficult [verb] that | 28 |
|
| 3 | it is [adv] difficult [verb] that | 28 |
|
| 4 | it is [not/n't] difficult [verb] that | 15 |
|
| 5 | it is not difficult [verb] that | 15 |
|
| 6 | it is not difficult [verb] that | 15 |
|
| 7 | it is [adv] difficult [verb] that | 13 |
|
| 8 | it is [adv] difficult see that | 7 |
|
| 9 | it is [adv] difficult to see that | 7 |
|
| 10 | it is [adv] difficult imagine that | 5 |
|
| 11 | it is [adv] difficult to imagine that | 5 |
|
