| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know he must [vb infin] | 25 |
|
| 2 | knew he must [vb infin] | 16 |
|
| 3 | know he must have | 7 |
|
| 4 | knows he must [vb infin] | 6 |
|
