| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [be] several | 8 |
|
| 2 | [modal v] have been several | 8 |
|
| 3 | [modal v] have be several | 8 |
|
| 4 | [modal v] have [been] several | 8 |
|
| 5 | [modal v] have [be] several | 8 |
|
| 6 | must have [be] several | 5 |
|
| 7 | must have [be] several | 5 |
|
