| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] [Wh det] is [prep] | 17 |
|
| 2 | [prep] [verb] what is [prep] | 13 |
|
| 3 | [prep] [verb] [Wh det] is in | 9 |
|
| 4 | of [verb] [Wh det] is [prep] | 5 |
|
