| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [to-vb] | 3033 |
|
| 2 | [adv] harder [to-vb] | 204 |
|
| 3 | is [adv] harder | 70 |
|
| 4 | is harder [to-vb] | 67 |
|
