| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be [verb] at | 2261 |
|
| 2 | [v-ing] be [verb] [prep] | 1196 |
|
| 3 | [v-ing] be [verb] [prep] | 1194 |
|
| 4 | [v-ing] [be] [verb] at | 49 |
|
| 5 | [v-ing] be [verb] at | 49 |
|
