| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] exist and [modal v] be | 10 |
|
| 2 | [vb mod] exist and [modal v] be | 10 |
|
| 3 | [vb mod] exist [conj] [vb mod] be | 10 |
|
| 4 | must exist [conj] [modal v] be | 10 |
|
| 5 | [vb mod] exist [coord] [modal v] be | 10 |
|
| 6 | [vb mod] exist [conj] can be | 7 |
|
| 7 | [vb mod] exist [conj] can be | 7 |
|
