| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it [adj] [verb] [det] [noun] | 23 |
|
| 2 | [verb] it difficult [verb] [det] [noun] | 20 |
|
| 3 | [vb past] it [adj] [verb] [det] [noun] | 20 |
|
| 4 | [vb past] it difficult [verb] [adj] [noun] | 17 |
|
| 5 | [vb past] [pers pn] difficult [verb] [det] [noun] | 6 |
|
| 6 | [vb past] it difficult [verb] [det] [noun] | 6 |
|
| 7 | [vb past] it difficult [verb] [det] [noun] | 6 |
|
| 8 | [vb past] [pron] difficult [verb] [det] [noun] | 6 |
|
