| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | therefore can [adv] [vb infin] | 28 |
|
| 2 | therefore can not [vb infin] | 28 |
|
| 3 | therefore can [not/n't] [vb infin] | 28 |
|
| 4 | therefore can not [vb infin] | 24 |
|
