| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [prep] the | 6700 |
|
| 2 | [v-ing] [prep] the front | 139 |
|
| 3 | [was/were] [prep] the front | 48 |
|
| 4 | [was/were] [v-ing] the front | 6 |
|
