| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [adv] difficult [verb] | 102 |
|
| 2 | [art] [adv] it [verb] | 77 |
|
| 3 | [art] [adv] difficult it | 42 |
|
| 4 | [adv] difficult it [verb] | 18 |
|
