| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [vb mod] [be] difficult to get | 8 |
|
| 2 | [conj] it [modal v] [be] difficult to get | 8 |
|
| 3 | [conj] it [be] [adv] difficult to get | 21 |
|
| 4 | [conj] it [be] [adv] difficult to get | 21 |
|
| 5 | [conj] it [be] very difficult to get | 9 |
|
| 6 | [conj] it [be] very difficult to get | 9 |
|
