| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it [is] [not/n't] know | 10 |
|
| 2 | and it [is] [not/n't] known | 10 |
|
| 3 | and it is [not/n't] know | 10 |
|
| 4 | and it [is] not know | 10 |
|
