| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | or [modal v] have known | 15 |
|
| 2 | or [vb mod] [verb] known | 15 |
|
| 3 | or [modal v] [verb] known | 15 |
|
| 4 | or [modal v] have known | 10 |
|
| 5 | or [modal v] [vb infin] known | 10 |
|
| 6 | or should [verb] known | 8 |
|
| 7 | or should [verb] known | 8 |
|
| 8 | or [modal v] [to-vb] known | 5 |
|
| 9 | or ought [verb] known | 5 |
|
| 10 | or ought [verb] known | 5 |
|
| 11 | or [modal v] to have known | 5 |
|
