| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] be [v-ing] | 7355 |
|
| 2 | [vb base] be [v-ing] | 7085 |
|
| 3 | [Wh det] [vb base] be | 1615 |
|
| 4 | [Wh det] [vb base] [v-ing] | 143 |
|
