| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] not to | 982 |
|
| 2 | refer [adv] to | 567 |
|
| 3 | refer not to | 23 |
|
| 4 | refer not [prep] | 23 |
|
| 5 | refer not [prep] | 23 |
|
