| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how do they [vb infin] that | 17 |
|
| 2 | how do they [vb infin] [det] | 15 |
|
| 3 | how did they [vb infin] [det] | 13 |
|
| 4 | how do they do [det] | 10 |
|
