| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adj] [prep] [noun] | 910 |
|
| 2 | it [adj] [prep] [noun] | 601 |
|
| 3 | [pron] difficult [prep] [noun] | 63 |
|
| 4 | [pers pn] difficult [prep] [noun] | 62 |
|
| 5 | it difficult [prep] [noun] | 62 |
|
| 6 | it difficult [prep] [noun] | 62 |
|
