| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it to make [noun] | 24 |
|
| 2 | [verb] it difficult to make | 19 |
|
| 3 | it difficult to make [noun] | 9 |
|
| 4 | [verb] it difficult [noun] | 6 |
|
