| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [v-ing] [prep] [noun] [prep] | 692 |
|
| 2 | what was [v-ing] [prep] [noun] | 76 |
|
| 3 | what was [prep] [noun] [prep] | 18 |
|
| 4 | what was [v-ing] [noun] [prep] | 6 |
|
