| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at which [art] | 866 |
|
| 2 | at which [art] | 866 |
|
| 3 | at which the | 749 |
|
| 4 | at which the | 749 |
|
| 5 | at which a | 113 |
|
| 6 | at which a | 100 |
|
| 7 | at which an | 13 |
|
