| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | think we ought [to-vb] [art] | 10 |
|
| 2 | think we ought [to-vb] [art] | 10 |
|
| 3 | think we [vb mod] [to-vb] [art] | 10 |
|
| 4 | think we [modal v] [to-vb] a | 8 |
|
