| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] be [v-ing] [verb] to | 81 |
|
| 2 | know [Wh det] be [v-ing] [verb] | 69 |
|
| 3 | know [Wh det] be [verb] to | 40 |
|
| 4 | know [Wh det] be [v-ing] to | 38 |
|
