| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [prep] | 26019 |
|
| 2 | [v-ing] [indef pn] [prep] | 2325 |
|
| 3 | [was/were] [indef pn] [prep] | 2189 |
|
| 4 | [was/were] [v-ing] [indef pn] | 584 |
|
