| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which involved [verb] [art] | 12 |
|
| 2 | [Wh det] involved [v-ing] [art] | 12 |
|
| 3 | [Wh det] involved [verb] [art] | 12 |
|
| 4 | [Wh det] involved [verb] a | 7 |
|
| 5 | [Wh det] involved [verb] a | 7 |
|
| 6 | [Wh det] involved [verb] the | 5 |
|
| 7 | [Wh det] involved [verb] the | 5 |
|
