| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [not/n't] [vb infin] of | 814 |
|
| 2 | [modal v] [not/n't] [vb infin] known | 140 |
|
| 3 | [modal v] [vb infin] known of | 12 |
|
| 4 | [not/n't] [vb infin] known of | 6 |
|
