| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [verb] a [adj] | 237 |
|
| 2 | how [to-vb] a [adj] | 218 |
|
| 3 | [adv] to produce a [adj] | 54 |
|
| 4 | how produce a [adj] | 6 |
|
| 5 | how to produce [art] [adj] | 6 |
|
