| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] what [modal v] | 64 |
|
| 2 | [prep] [v-ing] what [modal v] | 64 |
|
| 3 | for [v-ing] [pron] [modal v] | 47 |
|
| 4 | for [verb] what [modal v] | 7 |
|
| 5 | for [v-ing] what [modal v] | 7 |
|
