| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who does [adv] understand | 17 |
|
| 2 | who does [not/n't] understand | 17 |
|
| 3 | who does not understand | 17 |
|
| 4 | who does n't understand | 9 |
|
| 5 | who does not understand | 8 |
|
