| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it is [not/n't] known | 24 |
|
| 2 | [coord] it [is] not known | 24 |
|
| 3 | but it [is] [not/n't] known | 14 |
|
| 4 | and it [is] [not/n't] known | 10 |
|
