| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know what 's [v-ing] [prep] | 16 |
|
| 2 | know what 's [verb] [prep] | 16 |
|
| 3 | know what 's happen [prep] | 11 |
|
| 4 | know what 's happening [prep] | 11 |
|
| 5 | know what 's [verb] to | 9 |
|
