| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [prep] be [v-ing] | 48 |
|
| 2 | be [prep] [be] [v-ing] | 40 |
|
| 3 | be [prep] be [v-ing] | 40 |
|
| 4 | be to [be] [v-ing] | 39 |
|
| 5 | is [prep] [be] [v-ing] | 16 |
|
| 6 | was [prep] [be] [v-ing] | 14 |
|
| 7 | were [prep] [be] [v-ing] | 8 |
|
| 8 | be [prep] is [v-ing] | 6 |
|
| 9 | be [prep] [is] [v-ing] | 6 |
|
| 10 | be [prep] [be] working | 5 |
|
