| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adj] it is [verb] to | 18 |
|
| 2 | how difficult it is [verb] [prep] | 9 |
|
| 3 | how difficult it is [verb] [prep] | 9 |
|
| 4 | how difficult it be [verb] to | 7 |
|
| 5 | how difficult it [be] [verb] to | 7 |
|
| 6 | how difficult it [is] [verb] to | 7 |
|
| 7 | how difficult [pers pn] is [verb] to | 6 |
|
| 8 | how difficult it is [verb] to | 6 |
|
| 9 | how difficult [pron] is [verb] to | 6 |
|
| 10 | how difficult it is [verb] to | 6 |
|
| 11 | [adv] difficult it is [verb] to | 6 |
|
