| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what was [v-ing] [adv prt] at [art] | 7 |
|
| 2 | what [was/were] [v-ing] [adv prt] at [art] | 7 |
|
| 3 | what [was/were] [v-ing] [adv prt] at the | 7 |
|
| 4 | what [was/were] [v-ing] on at [art] | 6 |
|
| 5 | what [was/were] going [adv prt] at [art] | 6 |
|
