| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it difficult [to-vb] the [adj] [noun] | 35 |
|
| 2 | it difficult [to-vb] the [adj] [noun] | 32 |
|
| 3 | it difficult [to-vb] the [adj] [noun sg] | 23 |
|
| 4 | it difficult [to-vb] the [adj] [noun pl] | 12 |
|
