| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of [Wh det] [be] [v-ing] [prep] | 143 |
|
| 2 | [Wh det] [be] [v-ing] [prep] [be] | 122 |
|
| 3 | of [Wh det] [be] [prep] [be] | 67 |
|
