| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adj] it [be] [verb] [prep] | 80 |
|
| 2 | [adv] difficult it [be] [verb] [prep] | 13 |
|
| 3 | how difficult [pers pn] [be] [verb] [prep] | 11 |
|
| 4 | how difficult [pron] [be] [verb] [prep] | 11 |
|
| 5 | how difficult it [be] [verb] [prep] | 11 |
|
