| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [v-ing] at [noun] | 122 |
|
| 2 | what is at [noun] | 63 |
|
| 3 | what is [v-ing] at | 24 |
|
| 4 | what is [v-ing] [noun] | 21 |
|
