| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh det] [be] to [be] | 84 |
|
| 2 | [v-ing] [pron] [be] to [be] | 16 |
|
| 3 | [v-ing] [Wh det] [be] [prep] [be] | 9 |
|
