| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb mod] be [v-ing] to | 17 |
|
| 2 | [Wh det] [modal v] be [v-ing] to | 17 |
|
| 3 | which [modal v] be [v-ing] to | 13 |
|
| 4 | [Wh det] may be [v-ing] to | 5 |
|
| 5 | [Wh det] may be [v-ing] to | 5 |
|
