| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have taught [pron] how [to-vb] | 20 |
|
| 2 | [verb] taught [pron] how [to-vb] | 20 |
|
| 3 | [vb past] taught [pron] how [to-vb] | 15 |
|
| 4 | had taught [pron] how [to-vb] | 14 |
|
