| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [modal v] be [v-ing] | 401 |
|
| 2 | and [modal v] be [v-ing] | 261 |
|
| 3 | and [Wh pn] be [v-ing] | 105 |
|
| 4 | and [Wh pn] [modal v] be | 85 |
|
