| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [verb] [prep] be | 370 |
|
| 2 | [prep] [v-ing] [prep] [be] | 342 |
|
| 3 | [prep] [v-ing] [prep] be | 342 |
|
| 4 | [prep] [v-ing] [prep] [be] | 308 |
|
