| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb -s] it difficult for | 18 |
|
| 2 | [noun] [vb -s] it difficult for | 18 |
|
| 3 | [noun] makes it difficult for | 17 |
|
| 4 | [noun sg] [vb -s] it difficult for | 9 |
|
| 5 | [noun pl] [vb -s] it difficult for | 8 |
|
