| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] on at the | 51 |
|
| 2 | be go on at the | 38 |
|
| 3 | be going on at the | 38 |
|
| 4 | be [vb pp] on at the | 24 |
|
| 5 | 's [verb] on at the | 15 |
|
| 6 | was [verb] on at the | 14 |
|
| 7 | be work on at the | 13 |
|
| 8 | is [verb] on at the | 12 |
|
| 9 | be [verb] on at the | 10 |
|
| 10 | be working on at the | 10 |
|
| 11 | 're [verb] on at the | 8 |
|
| 12 | been [verb] on at the | 7 |
|
