| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adj] it is [prep] | 126 |
|
| 2 | how difficult it [be] [prep] | 31 |
|
| 3 | how difficult it be [prep] | 31 |
|
| 4 | [adv] difficult it is [prep] | 24 |
|
| 5 | how difficult [pron] is [prep] | 21 |
|
| 6 | how difficult it [is] [prep] | 21 |
|
