| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] could [adv] have | 612 |
|
| 2 | he could [adv] have | 140 |
|
| 3 | he could [adv] have | 139 |
|
| 4 | it could [adv] have | 117 |
|
| 5 | it could [adv] have | 117 |
|
| 6 | [pron] could never have | 109 |
|
| 7 | [pron] could easily have | 90 |
|
| 8 | she could [adv] have | 85 |
|
| 9 | i could [adv] have | 85 |
|
| 10 | i could [adv] have | 85 |
|
| 11 | she could [adv] have | 85 |
|
| 12 | they could [adv] have | 73 |
|
| 13 | they could [adv] have | 71 |
|
| 14 | [pron] could hardly have | 70 |
|
| 15 | you could [adv] have | 59 |
|
| 16 | you could [adv] have | 59 |
|
| 17 | we could [adv] have | 53 |
|
| 18 | we could [adv] have | 53 |
|
| 19 | [pron] could well have | 53 |
|
| 20 | [pron] could ever have | 52 |
|
| 21 | [pron] could possibly have | 47 |
|
| 22 | [Wh det] could [adv] have | 44 |
|
| 23 | [pron] could only have | 41 |
|
| 24 | which could [adv] have | 38 |
|
| 25 | which could [adv] have | 38 |
|
| 26 | [pron] could also have | 28 |
|
| 27 | [indef pn] could [adv] have | 28 |
|
| 28 | [pron] could probably have | 19 |
|
| 29 | [pron] could still have | 18 |
|
| 30 | [Wh pn] could [adv] have | 16 |
|
