| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 's [adv] [adv] [conj] | 292 |
|
| 2 | [adv] [adv] difficult [conj] | 181 |
|
| 3 | 's [adv] [adv] difficult | 63 |
|
| 4 | 's [adv] difficult [conj] | 16 |
|
| 5 | 's [adv] difficult [conj] | 14 |
|
