| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be possible to produce | 32 |
|
| 2 | [is] possible to produce | 21 |
|
| 3 | is possible to produce | 21 |
|
| 4 | [be] possible to produce | 8 |
|
| 5 | be possible to produce | 8 |
|
