| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [adv] to | 912 |
|
| 2 | [adv] refer to | 127 |
|
| 3 | [not/n't] refer to | 126 |
|
| 4 | [not/n't] [adv] refer | 28 |
|
