| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [verb] [pron] [vb infin] [art] | 472 |
|
| 2 | [verb] [pron] [vb infin] at [art] | 173 |
|
| 3 | how [verb] [pron] [vb infin] at | 21 |
|
