| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [verb] [prep] [art] [noun sg] | 772 |
|
| 2 | be [verb] [verb] at [art] [noun sg] | 191 |
|
| 3 | be [v-ing] [verb] at [art] [noun] | 66 |
|
| 4 | [be] [v-ing] [verb] at [art] [noun sg] | 53 |
|
