| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] and [was/were] | 8 |
|
| 2 | [vb mod] [be] and [was/were] | 8 |
|
| 3 | [modal v] be and [was/were] | 8 |
|
| 4 | could [be] and [was/were] | 5 |
|
| 5 | could [be] and [was/were] | 5 |
|
