| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it may [verb] [adj] | 503 |
|
| 2 | it [vb mod] [verb] difficult | 25 |
|
| 3 | it [modal v] [verb] difficult | 25 |
|
| 4 | [pron] may [verb] difficult | 15 |
|
| 5 | [pers pn] may [verb] difficult | 13 |
|
| 6 | it may [verb] difficult | 12 |
|
| 7 | it may [verb] difficult | 12 |
|
