| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how do we [vb infin] it | 37 |
|
| 2 | how do we do it | 16 |
|
| 3 | how do we know it | 9 |
|
| 4 | how do we get it | 6 |
|
| 5 | how did we [vb infin] it | 5 |
|
