| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] understand it at | 12 |
|
| 2 | [adv] understand it at | 11 |
|
| 3 | not understand it at | 10 |
|
| 4 | [not/n't] understand it at | 10 |
|
| 5 | n't understand it at | 9 |
|
