| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] to what be [vb pp] [prep] | 9 |
|
| 2 | [v-ing] to [Wh det] be [vb pp] [prep] | 9 |
|
| 3 | [v-ing] to what be [vb pp] [prep] | 9 |
|
| 4 | [v-ing] to [pron] is [vb pp] [prep] | 7 |
|
