| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [adv] [adj] [to-vb] | 1559 |
|
| 2 | [pron] [adv] [adj] [to-vb] | 1410 |
|
| 3 | [pron] [adv] difficult [verb] | 403 |
|
| 4 | [pron] [adv] difficult [to-vb] | 398 |
|
