| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] be [verb] to [noun] | 607 |
|
| 2 | [vb past] be [v-ing] [prep] [noun] | 461 |
|
| 3 | [verb] be [v-ing] to [noun] | 148 |
|
| 4 | [vb past] [be] [v-ing] to [noun] | 42 |
|
