| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb base] [art] | 4853 |
|
| 2 | at which [art] | 866 |
|
| 3 | at which [vb base] | 164 |
|
| 4 | at [vb base] [art] | 10 |
|
