| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be [v-ing] [pron] [be] | 27 |
|
| 2 | [vb mod] be [verb] what [be] | 10 |
|
| 3 | [vb mod] [be] [v-ing] what [be] | 8 |
|
| 4 | [modal v] be [v-ing] what [be] | 8 |
|
