| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] know what happened [prep] | 38 |
|
| 2 | [adv] know [Wh det] happened [prep] | 38 |
|
| 3 | [adv] know what happened [prep] | 38 |
|
| 4 | [adv] know [pron] happened [prep] | 35 |
|
| 5 | [not/n't] know [pron] happened [prep] | 31 |
|
| 6 | not know [pron] happened [prep] | 31 |
|
| 7 | [adv] know [pron] happened to | 29 |
|
| 8 | n't know [pron] happened [prep] | 28 |
|
| 9 | [adv] know [pron] happened [prep] | 7 |
|
