| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [noun sg] at | 546 |
|
| 2 | then [vb base] [noun sg] | 306 |
|
| 3 | then [vb base] at | 95 |
|
| 4 | then [noun sg] at | 15 |
|
