| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] have be [noun] | 23 |
|
| 2 | could [adv] have been [noun] | 23 |
|
| 3 | could [adv] have [be] [noun] | 23 |
|
| 4 | could [adv] have [been] [noun] | 23 |
|
| 5 | could [adv] have [be] [noun] | 23 |
|
| 6 | could [adv] have [be] [noun prp] | 10 |
|
| 7 | could [adv] have [be] [noun sg] | 9 |
|
| 8 | could easily have [be] [noun] | 5 |
|
