| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | work out what [is] [v-ing] on | 6 |
|
| 2 | work out what [is] going on | 6 |
|
| 3 | work out what [is] go on | 6 |
|
| 4 | work out what 's [verb] on | 5 |
|
