| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [modal v] only have be | 6 |
|
| 2 | which [modal v] only have been | 6 |
|
| 3 | which [modal v] only have [been] | 6 |
|
| 4 | which [modal v] only have [be] | 6 |
|
