| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] had be [v-ing] | 2088 |
|
| 2 | [Wh det] [noun] be [v-ing] | 1073 |
|
| 3 | [Wh det] [noun] had be | 427 |
|
| 4 | [Wh det] had be [v-ing] | 198 |
|
