| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] at [art] | 10076 |
|
| 2 | [be] [v-ing] at [art] | 2298 |
|
| 3 | [be] happening [prep] [art] | 431 |
|
| 4 | [be] happen at [art] | 53 |
|
