| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] is [verb] | 11267 |
|
| 2 | [v-ing] [Wh det] [verb] | 961 |
|
| 3 | [v-ing] is [verb] | 581 |
|
| 4 | [v-ing] [Wh det] is | 371 |
|
