| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult than it [verb] | 10 |
|
| 2 | more difficult than it [verb] | 10 |
|
| 3 | more difficult than it [verb] | 10 |
|
| 4 | [adv] difficult than it [verb] | 10 |
|
