| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] on [art] [noun] | 3390 |
|
| 2 | [was/were] [v-ing] on [art] [noun] | 979 |
|
| 3 | [was/were] working [prep] [art] [noun] | 326 |
|
| 4 | [was/were] working [prep] [art] [noun] | 326 |
|
| 5 | [be] working on [art] [noun] | 285 |
|
| 6 | [was/were] work on [art] [noun] | 96 |
|
| 7 | [was/were] working on [art] [noun] | 92 |
|
| 8 | [was/were] working on [art] [noun] | 92 |
|
