| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it difficult [to-vb] [noun] | 26 |
|
| 2 | found it difficult [verb] [noun] | 23 |
|
| 3 | [vb past] it difficult [verb] [noun pl] | 12 |
|
| 4 | [vb past] it difficult [verb] [noun sg] | 10 |
|
