| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not know for [adj] | 21 |
|
| 2 | not know for [adj] | 13 |
|
| 3 | not know for certain | 12 |
|
| 4 | not know for certain | 12 |
|
| 5 | not known for [adj] | 9 |
|
| 6 | not know for sure | 9 |
|
| 7 | not know for sure | 9 |
|
