| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [verb] at a | 679 |
|
| 2 | is [verb] at a | 359 |
|
| 3 | [verb] is [verb] a | 328 |
|
| 4 | [verb] is [verb] at | 83 |
|
| 5 | [verb] is at a | 5 |
|
