| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they were [v-ing] [prep] | 1463 |
|
| 2 | were [v-ing] [prep] [num] | 147 |
|
| 3 | they were [prep] [num] | 80 |
|
| 4 | they were [v-ing] [num] | 46 |
|
