| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [vb infin] [noun] | 287 |
|
| 2 | could [vb infin] [be] [noun] | 217 |
|
| 3 | they could [vb infin] [be] | 126 |
|
| 4 | they could [be] [noun] | 21 |
|
