| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] on at the [noun sg] | 40 |
|
| 2 | be going on at the [noun] | 30 |
|
| 3 | be [v-ing] on at the moment | 18 |
|
| 4 | be [v-ing] on at the moment | 17 |
|
| 5 | 's [v-ing] on at the [noun] | 13 |
|
| 6 | be working on at the [noun] | 9 |
|
| 7 | 're [v-ing] on at the [noun] | 8 |
|
| 8 | be [v-ing] on at the time | 8 |
|
| 9 | be [v-ing] on at the time | 8 |
|
| 10 | was [v-ing] on at the [noun] | 8 |
|
| 11 | is [v-ing] on at the [noun] | 7 |
|
