| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] difficult [verb] | 430 |
|
| 2 | [conj] it [is] difficult [to-vb] | 428 |
|
| 3 | [conj] it [is] [adj] to get | 103 |
|
| 4 | [conj] it [be] difficult to get | 16 |
|
| 5 | [conj] it [is] difficult get | 13 |
|
| 6 | [conj] [pron] [is] difficult to get | 13 |
|
