| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [pron] [prep] | 1347 |
|
| 2 | [be] [v-ing] [indef pn] [prep] | 521 |
|
| 3 | [was/were] [verb] [indef pn] [prep] | 244 |
|
