| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [vb pp] [adv] [pron] [noun] | 8 |
|
| 2 | could [vb infin] [vb pp] [adv] [pron] [noun] | 8 |
|
| 3 | could [verb] [vb pp] [adv prt] [pron] [noun] | 8 |
|
| 4 | could have [vb pp] [adv] [pron] [noun] | 7 |
|
| 5 | could [verb] [vb pp] [adv] [pron] [noun sg] | 7 |
|
| 6 | could [verb] [vb pp] [adv] [pos pn] [noun] | 7 |
|
| 7 | could [verb] [vb pp] out [pron] [noun] | 6 |
|
| 8 | could [verb] [vb pp] out [pron] [noun] | 6 |
|
