| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it difficult for [adj] [noun] | 22 |
|
| 2 | make it difficult [prep] [adj] [noun] | 22 |
|
| 3 | [verb] it difficult [prep] [adj] [noun pl] | 17 |
|
| 4 | [verb] it difficult [prep] [adj] [noun] | 16 |
|
| 5 | [vb -s] it difficult [prep] [adj] [noun] | 9 |
|
| 6 | makes it difficult [prep] [adj] [noun] | 8 |
|
| 7 | [verb] it difficult [prep] [det] [noun] | 6 |
|
| 8 | [verb] it difficult [prep] [adj] [noun sg] | 6 |
|
