| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know what [was/were] [v-ing] on | 116 |
|
| 2 | know what was [verb] on | 116 |
|
| 3 | know what [was/were] going on | 116 |
|
| 4 | know what [was/were] go on | 116 |
|
| 5 | know what [was/were] [verb] on | 46 |
|
| 6 | knew what [was/were] [verb] on | 37 |
|
| 7 | to know what [was/were] [verb] on | 20 |
|
| 8 | known what [was/were] [verb] on | 8 |
|
