| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [verb] be [v-ing] on | 222 |
|
| 2 | [Wh det] [verb] be [v-ing] [adv] | 143 |
|
| 3 | [Wh det] [verb] be [verb] on | 93 |
|
| 4 | [Wh det] [verb] [be] [v-ing] on | 80 |
|
