| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] how difficult it be for | 20 |
|
| 2 | [vb base] how difficult it be for | 7 |
|
| 3 | know how [adj] it be for | 7 |
|
| 4 | know how difficult it be [prep] | 6 |
|
| 5 | know how difficult it be for | 5 |
|
| 6 | know how difficult [pron] be for | 5 |
|
| 7 | know [adv] difficult it be for | 5 |
|
| 8 | know how difficult [pers pn] be for | 5 |
|
| 9 | know how difficult it be for | 5 |
|
| 10 | know how difficult it [be] for | 5 |
|
