| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adj] it [vb mod] [be] for | 20 |
|
| 2 | [adv] difficult it [vb mod] [be] for | 6 |
|
| 3 | [Wh adv] difficult it [vb mod] [be] for | 5 |
|
| 4 | how difficult it [vb mod] [be] for | 5 |
|
| 5 | how difficult [pron] [vb mod] [be] for | 5 |
|
| 6 | how difficult [pers pn] [vb mod] [be] for | 5 |
|
| 7 | how difficult it [vb mod] [be] [prep] | 5 |
|
| 8 | how difficult it [vb mod] [be] for | 5 |
|
| 9 | how difficult it [modal v] [be] for | 5 |
|
