| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [adj] [verb] | 4362 |
|
| 2 | [verb] [pron] difficult [verb] | 1135 |
|
| 3 | [verb] [pers pn] difficult [verb] | 1133 |
|
| 4 | [verb] it difficult [verb] | 1110 |
|
