| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it was [adv] difficult [to-vb] [conj] | 10 |
|
| 2 | it was [adv] difficult [verb] [conj] | 10 |
|
| 3 | it was [adv] difficult [verb] [subord] | 5 |
|
