| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] what [verb] [vb pp] | 163 |
|
| 2 | [to-vb] what have [verb] | 160 |
|
| 3 | [to-vb] what [verb] happen | 107 |
|
| 4 | [to-vb] what [verb] happened | 106 |
|
| 5 | [to-vb] what [vb past] [verb] | 101 |
|
| 6 | [to-vb] what had [verb] | 94 |
|
| 7 | [to-vb] what [vb -s] [verb] | 73 |
|
| 8 | [to-vb] what has [verb] | 51 |
|
| 9 | to know what [verb] [verb] | 30 |
|
| 10 | to see what [verb] [verb] | 24 |
|
| 11 | [to-vb] what 's [verb] | 15 |
|
| 12 | [to-vb] what [verb] gone | 12 |
|
| 13 | [to-vb] what [verb] go | 12 |
|
| 14 | to understand what [verb] [verb] | 11 |
|
| 15 | to explain what [verb] [verb] | 10 |
|
| 16 | [to-vb] what [verb] become | 9 |
|
| 17 | [to-vb] what [verb] become | 8 |
|
| 18 | [to-vb] what [verb] [to-vb] | 6 |
|
| 19 | to discover what [verb] [verb] | 6 |
|
| 20 | [to-vb] what [verb] cause | 5 |
|
| 21 | to say what [verb] [verb] | 5 |
|
| 22 | [to-vb] what [verb] caused | 5 |
|
