| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [noun] [prep] [noun] | 567 |
|
| 2 | [was/were] [verb] [n mass] [prep] [noun] | 102 |
|
| 3 | [be] [v-ing] [n mass] [prep] [noun] | 94 |
|
| 4 | [was/were] [v-ing] [n mass] [prep] [noun] | 19 |
|
