| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have known | 666 |
|
| 2 | should have know | 205 |
|
| 3 | must have know | 195 |
|
| 4 | would have know | 118 |
|
| 5 | might have know | 75 |
|
| 6 | 'd have know | 56 |
|
| 7 | [vb mod] have to know | 34 |
|
| 8 | could have know | 30 |
|
| 9 | may have know | 13 |
|
| 10 | 'll have know | 10 |
|
| 11 | [vb mod] have know | 6 |
|
