| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] know [adv] [pron] [is] | 47 |
|
| 2 | [vb infin] [verb] [adv] [pron] [is] | 38 |
|
| 3 | [vb infin] know [adv] [pron] [be] | 33 |
|
