| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we could [verb] [noun] | 251 |
|
| 2 | [pron] could hear [noun] | 184 |
|
| 3 | we [vb mod] hear [noun] | 14 |
|
| 4 | we [modal v] hear [noun] | 14 |
|
| 5 | we could hear [noun] | 6 |
|
