| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [be] [v-ing] at [art] [adj] | 145 |
|
| 2 | [noun] [be] [verb] at [art] [det] | 116 |
|
| 3 | [noun] [be] [v-ing] [prep] [art] [det] | 81 |
|
