| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could | 87089 |
|
| 2 | [pers pn] could | 75830 |
|
| 3 | they [modal v] | 65913 |
|
| 4 | they [vb mod] | 65913 |
|
| 5 | they could | 8439 |
|
| 6 | they could | 8223 |
|
