| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [v-ing] [prep] a [noun] | 545 |
|
| 2 | are [v-ing] [prep] a [noun] | 545 |
|
| 3 | [be] [v-ing] at a [noun] | 280 |
|
| 4 | be [v-ing] at a [noun] | 280 |
|
| 5 | are [v-ing] at [art] [noun] | 162 |
|
| 6 | are [v-ing] at [art] [noun] | 162 |
|
| 7 | are [verb] at a [noun] | 86 |
|
| 8 | [am/are] [v-ing] at a [noun] | 59 |
|
| 9 | are [v-ing] at a [noun] | 38 |
|
| 10 | are [v-ing] at a [noun] | 35 |
|
