| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] long have we [verb] | 10 |
|
| 2 | how long have we [verb] | 9 |
|
| 3 | [Wh adv] long have we [verb] | 9 |
|
| 4 | how long have we [verb] | 9 |
|
