| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] it [verb] | 4629 |
|
| 2 | it difficult [verb] | 1120 |
|
| 3 | [vb base] it difficult | 318 |
|
| 4 | [vb base] difficult [verb] | 31 |
|
