| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] could [adv] have | 52 |
|
| 2 | [adj] could [adv] have | 44 |
|
| 3 | this could [adv] have | 30 |
|
| 4 | this could [adv] have | 30 |
|
| 5 | [adj] could [not/n't] have | 22 |
|
| 6 | [adj] could not have | 22 |
|
| 7 | [adj] could not have | 17 |
|
| 8 | that could [adv] have | 16 |
|
| 9 | that could [adv] have | 16 |
|
| 10 | [adj] could well have | 12 |
|
| 11 | [adj] could well have | 12 |
|
| 12 | [num] could [adv] have | 9 |
|
| 13 | [adj] could hardly have | 7 |
|
| 14 | [adj] could hardly have | 7 |
|
| 15 | [adj] could easily have | 7 |
|
| 16 | [adj] could easily have | 7 |
|
| 17 | [adj] could n't have | 5 |
|
| 18 | [adj] could only have | 5 |
|
| 19 | [adj] could only have | 5 |
|
| 20 | [adj] could [adv] have | 5 |
|
