| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult [conj] | 785 |
|
| 2 | [adv] to say [conj] | 698 |
|
| 3 | [adv] difficult to say | 45 |
|
| 4 | difficult to say [conj] | 29 |
|
