| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [noun] [prep] an [adj] | 51 |
|
| 2 | be [v-ing] [noun] at [art] [adj] | 38 |
|
| 3 | be [v-ing] [noun] at [art] [adj] | 38 |
|
| 4 | be [v-ing] [noun] at a [adj] | 16 |
|
| 5 | be [verb] [noun] at an [adj] | 8 |
|
| 6 | be [v-ing] [noun] at an [adj] | 7 |
|
| 7 | [be] [v-ing] [noun] at an [adj] | 6 |
|
