| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have be [verb] | 1154 |
|
| 2 | could have been [verb] | 1153 |
|
| 3 | could have [been] [verb] | 1153 |
|
| 4 | could have [be] [verb] | 1134 |
|
| 5 | could have [be] [vb pp] | 1057 |
|
| 6 | could have [be] [v-ing] | 93 |
|
| 7 | could have [be] avoid | 52 |
|
| 8 | could have [be] avoided | 52 |
|
| 9 | could have [be] use | 50 |
|
| 10 | could have [be] do | 49 |
|
| 11 | could have [be] used | 48 |
|
| 12 | could have [be] done | 44 |
|
| 13 | could have [be] make | 38 |
|
| 14 | could have [be] made | 37 |
|
| 15 | could have [be] put | 22 |
|
| 16 | could have [be] killed | 21 |
|
| 17 | could have [be] kill | 21 |
|
| 18 | could 've [be] [verb] | 20 |
|
| 19 | could have [be] put | 20 |
|
| 20 | could have [be] take | 18 |
|
| 21 | could have [be] taken | 17 |
|
| 22 | could have [be] prevent | 17 |
|
| 23 | could have [be] achieve | 17 |
|
| 24 | could have [be] achieved | 17 |
|
| 25 | could have [be] prevented | 17 |
|
| 26 | could have [be] caused | 15 |
|
| 27 | could have [be] cause | 15 |
|
| 28 | could have [be] forgiven | 15 |
|
| 29 | could have [be] forgive | 15 |
|
| 30 | could have [be] write | 14 |
|
