| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know [prep] | 952 |
|
| 2 | [not/n't] know [indef pn] | 425 |
|
| 3 | know [indef pn] [prep] | 407 |
|
| 4 | [not/n't] [indef pn] [prep] | 308 |
|
