| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [to-vb] [prep] [noun] | 251 |
|
| 2 | [was/were] [verb] [to-vb] at [noun] | 63 |
|
| 3 | [be] [v-ing] [to-vb] at [noun] | 41 |
|
| 4 | [was/were] [v-ing] [verb] at [noun] | 18 |
|
