| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [was/were] [v-ing] [adv] [prep] [noun] | 512 |
|
| 2 | it [was/were] [verb] [adv] [prep] [noun] | 239 |
|
| 3 | it [be] [v-ing] [adv] [prep] [noun] | 90 |
|
