| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did you [vb infin] how | 18 |
|
| 2 | did you [verb] how | 18 |
|
| 3 | did you know how | 5 |
|
| 4 | did you know how | 5 |
|
| 5 | did you notice how | 5 |
|
| 6 | did you notice how | 5 |
|
