| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] at the [noun] [prep] | 2015 |
|
| 2 | began [v-ing] the [noun] [prep] | 54 |
|
| 3 | began at the [noun] [prep] | 27 |
|
| 4 | began [v-ing] at the [noun] | 21 |
|
