| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | then [verb] [art] | 6575 |
|
| 2 | [adv] use [art] | 622 |
|
| 3 | then [vb infin] [art] | 604 |
|
| 4 | then use [art] | 100 |
|
| 5 | then use [art] | 10 |
|
