| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [noun] [prep] [noun] | 567 |
|
| 2 | [be] [v-ing] [noun] for [noun] | 278 |
|
| 3 | [was/were] [verb] [noun] for [noun] | 146 |
|
