| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] [pron] | 36736 |
|
| 2 | [prep] what [pron] | 12905 |
|
| 3 | [v-ing] what [pron] | 1764 |
|
| 4 | [prep] [v-ing] what | 1369 |
|
