| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [adv] it is | 384 |
|
| 2 | [adv] difficult it is | 104 |
|
| 3 | [adv] difficult it is | 25 |
|
| 4 | [adv] [adv] difficult it | 11 |
|
| 5 | [adv] [adv] difficult is | 6 |
|
