| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh det] be [v-ing] on | 653 |
|
| 2 | [verb] [adv] [Wh det] be [v-ing] | 234 |
|
| 3 | [adv] [Wh det] be [v-ing] on | 161 |
|
| 4 | [verb] [adv] be [v-ing] on | 25 |
|
