| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [verb] [conj] | 61907 |
|
| 2 | [adv] difficult [verb] | 3357 |
|
| 3 | difficult [verb] [conj] | 1093 |
|
| 4 | [adv] difficult [conj] | 757 |
|
