| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adv] [verb] [noun] [vb infin] | 30 |
|
| 2 | how often [verb] [noun] [verb] | 11 |
|
| 3 | [adv] often [verb] [noun] [vb infin] | 9 |
|
| 4 | [Wh adv] often [verb] [noun] [vb infin] | 8 |
|
| 5 | how often [verb] [noun] [vb infin] | 8 |
|
