| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [prep] [noun sg] | 1220 |
|
| 2 | [is] [v-ing] [prep] [noun sg] | 1212 |
|
| 3 | [be] [v-ing] at [noun sg] | 359 |
|
| 4 | [is] [verb] at [noun sg] | 313 |
|
| 5 | [is] [v-ing] at [noun] | 173 |
|
| 6 | [is] [v-ing] at [noun sg] | 66 |
|
