| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | about what [verb] [verb] | 97 |
|
| 2 | about what [verb] [vb pp] | 90 |
|
| 3 | about what have [verb] | 89 |
|
| 4 | about what [verb] happen | 79 |
|
| 5 | about what [verb] happened | 78 |
|
| 6 | about what [vb past] [verb] | 61 |
|
| 7 | about what had [verb] | 60 |
|
| 8 | about what [vb -s] [verb] | 35 |
|
| 9 | about what 's [verb] | 15 |
|
| 10 | about what has [verb] | 14 |
|
| 11 | about what [verb] [to-vb] | 7 |
|
