| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adv] do they [vb infin] [prep] | 7 |
|
| 2 | [Wh adv] [adv] do they [vb infin] [prep] | 7 |
|
| 3 | [Wh adv] [adv] do they [vb infin] [prep] | 7 |
|
| 4 | [Wh adv] [adv] do they [vb infin] [prep] | 6 |
|
| 5 | [Wh adv] long do they [vb infin] [prep] | 5 |
|
| 6 | [Wh adv] long do they [vb infin] [prep] | 5 |
|
