| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult [verb] [conj] | 419 |
|
| 2 | 's [adv] [verb] [conj] | 373 |
|
| 3 | 's [adv] difficult [verb] | 234 |
|
| 4 | 's difficult [verb] [conj] | 17 |
|
| 5 | 's [adv] difficult [conj] | 16 |
|
