| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [verb] [verb] an | 878 |
|
| 2 | [noun prp] [verb] [verb] at | 636 |
|
| 3 | [verb] [verb] at an | 109 |
|
| 4 | [noun prp] [verb] at an | 32 |
|
