| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it difficult | 1488 |
|
| 2 | to make it [adj] | 906 |
|
| 3 | make it difficult | 533 |
|
| 4 | [to-vb] it difficult | 39 |
|
| 5 | to make [pron] difficult | 25 |
|
