| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [was/were] [verb] [pron] [prep] an | 10 |
|
| 2 | [noun] [was/were] [v-ing] [pron] [prep] an | 6 |
|
| 3 | [noun] [was/were] [pron] [prep] an [noun] | 12 |
|
| 4 | [noun] [was/were] [pron] [prep] an [noun sg] | 12 |
|
