| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [prep] a [adj] [noun] | 847 |
|
| 2 | [was/were] [v-ing] [prep] [art] [adj] [noun pl] | 207 |
|
| 3 | [was/were] [verb] [prep] a [adj] [noun pl] | 110 |
|
| 4 | [be] [v-ing] [prep] a [adj] [noun pl] | 62 |
|
