| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [verb] that | 1268 |
|
| 2 | it [is] [adv] difficult [verb] | 757 |
|
| 3 | it [is] difficult [verb] that | 102 |
|
| 4 | [is] [adv] difficult [verb] that | 16 |
|
| 5 | it [adv] difficult [verb] that | 5 |
|
