| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [adv] [verb] [conj] | 115 |
|
| 2 | it [verb] [adv] difficult [verb] | 53 |
|
| 3 | it [adv] difficult [verb] [conj] | 19 |
|
| 4 | [verb] [adv] difficult [verb] [conj] | 13 |
|
| 5 | it [verb] difficult [verb] [conj] | 5 |
|
