| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] difficult [to-vb] [conj] | 19 |
|
| 2 | it [adv] difficult [verb] [coord] | 10 |
|
| 3 | it [adv] difficult [verb] and | 8 |
|
| 4 | it [adv] difficult [verb] and | 8 |
|
| 5 | it very difficult [verb] [conj] | 7 |
|
| 6 | it [adv] difficult [verb] that | 5 |
|
| 7 | it [adv] difficult [verb] that | 5 |
|
| 8 | it [adv] difficult [verb] [that] | 5 |
|
