| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] may [be] [adj] | 1299 |
|
| 2 | [noun pl] may [be] [adj] | 1195 |
|
| 3 | [noun pl] [modal v] [be] difficult | 92 |
|
| 4 | [noun] may [be] difficult | 73 |
|
| 5 | [noun pl] may [be] difficult | 22 |
|
