| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] [verb] [prep] | 18310 |
|
| 2 | [verb] [been] [v-ing] [prep] | 6060 |
|
| 3 | [vb past] [be] [v-ing] [prep] | 2310 |
|
| 4 | [vb past] [been] [v-ing] [prep] | 2255 |
|
