| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adv] do we [vb infin] | 28 |
|
| 2 | how [adv] do we [vb infin] | 27 |
|
| 3 | how often do we [vb infin] | 9 |
|
| 4 | how often do we [vb infin] | 9 |
|
| 5 | how long do we [vb infin] | 5 |
|
| 6 | how long do we [vb infin] | 5 |
|
