| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it might [be] [adj] | 836 |
|
| 2 | it might [be] [adj] | 612 |
|
| 3 | it [modal v] [be] difficult | 527 |
|
| 4 | it [vb mod] [be] difficult | 527 |
|
| 5 | [pron] might [be] difficult | 25 |
|
| 6 | it might [be] difficult | 21 |
|
| 7 | it might [be] difficult | 21 |
|
