| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] not [verb] | 68747 |
|
| 2 | [vb past] not [vb infin] | 57486 |
|
| 3 | [verb] not understand | 1819 |
|
| 4 | [vb past] not understand | 519 |
|
| 5 | [vb past] [adv] understand | 479 |
|
