| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adv] [verb] that | 2134 |
|
| 2 | it [be] [adv] difficult [verb] | 875 |
|
| 3 | it [be] difficult [verb] that | 132 |
|
| 4 | [be] [adv] difficult [verb] that | 27 |
|
| 5 | it [adv] difficult [verb] that | 5 |
|
