| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what was [adv] [v-ing] [prep] [noun] | 6 |
|
| 2 | what was [adv] happening [prep] [noun] | 5 |
|
| 3 | what was [adv] [v-ing] in [noun] | 5 |
|
