| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] it [adj] | 3520 |
|
| 2 | [verb] it difficult | 1488 |
|
| 3 | [vb base] [pron] difficult | 327 |
|
| 4 | [vb base] [pers pn] difficult | 325 |
|
| 5 | [vb base] it difficult | 318 |
|
