| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] out what [is] going on | 51 |
|
| 2 | [verb] out what [is] go on | 51 |
|
| 3 | [verb] out what [is] [v-ing] on | 51 |
|
| 4 | find out what [is] [verb] on | 39 |
|
| 5 | [verb] out what 's [verb] on | 36 |
|
| 6 | [to-vb] out what [is] [verb] on | 28 |
|
| 7 | to find out what [is] [verb] on | 22 |
|
| 8 | [verb] out what is [verb] on | 15 |
|
| 9 | [vb infin] out what [is] [verb] on | 8 |
|
| 10 | [vb base] out what [is] [verb] on | 8 |
|
| 11 | find out what [is] [verb] on | 7 |
|
| 12 | work out what [is] [verb] on | 6 |
|
| 13 | find out what [is] [verb] on | 6 |
|
