| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to be [v-ing] [prep] | 1891 |
|
| 2 | be [v-ing] [prep] [be] | 49 |
|
| 3 | to be [v-ing] [be] | 46 |
|
| 4 | to be [prep] [be] | 32 |
|
| 5 | to [v-ing] [prep] [be] | 9 |
|
