| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [vb pp] [adv] [to-vb] | 720 |
|
| 2 | [verb] [vb pp] how [to-vb] | 131 |
|
| 3 | have [vb pp] how [to-vb] | 128 |
|
| 4 | had [verb] how [to-vb] | 51 |
|
| 5 | [vb past] [vb pp] how [to-vb] | 42 |
|
| 6 | had [vb pp] how [verb] | 36 |
|
