| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [to-vb] [prep] a | 269 |
|
| 2 | [noun prp] [verb] at a | 230 |
|
| 3 | [noun] [to-vb] at a | 203 |
|
| 4 | [noun prp] [to-vb] at [art] | 70 |
|
