| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [v-ing] [prep] [noun] [prep] | 692 |
|
| 2 | [num] [v-ing] [prep] [noun] [prep] | 30 |
|
| 3 | [num] was [prep] [noun] [prep] | 19 |
|
| 4 | [num] was [v-ing] [prep] [noun] | 13 |
|
