| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [pron] [prep] an [noun] | 12 |
|
| 2 | [was/were] [v-ing] [pron] [prep] an [noun sg] | 11 |
|
| 3 | was [v-ing] [pron] [prep] an [noun] | 10 |
|
| 4 | [was/were] [v-ing] [pers pn] [prep] an [noun] | 9 |
|
