| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [subord] it is | 1831 |
|
| 2 | [adv] difficult it is | 104 |
|
| 3 | [adv] difficult [subord] it | 55 |
|
| 4 | difficult [subord] it is | 20 |
|
