| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] be [v-ing] [prep] [art] | 444 |
|
| 2 | [vb -s] be [verb] at [art] | 193 |
|
| 3 | [verb] be [v-ing] at [art] | 180 |
|
| 4 | [vb -s] [be] [v-ing] at [art] | 36 |
|
