| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] [conj] | 2818 |
|
| 2 | [adv] difficult [conj] | 757 |
|
| 3 | it [adv] difficult | 652 |
|
| 4 | it difficult [conj] | 33 |
|
