| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did n't know [pron] | 1642 |
|
| 2 | did n't know [prep] | 222 |
|
| 3 | n't know [prep] [pron] | 176 |
|
| 4 | did n't [prep] [pron] | 13 |
|
