| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | very difficult [verb] | 897 |
|
| 2 | very difficult [to-vb] | 892 |
|
| 3 | very [adj] to say | 82 |
|
| 4 | [adv] difficult to say | 45 |
|
| 5 | very difficult say | 16 |
|
