| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pron] [was/were] [verb] last [noun] | 7 |
|
| 2 | what [pers pn] [was/were] [verb] last [noun] | 7 |
|
| 3 | what [pron] [was/were] [verb] last [noun sg] | 7 |
|
| 4 | what [pron] [was/were] [v-ing] last [noun] | 5 |
|
| 5 | what [pron] [was/were] [verb] last night | 5 |
|
| 6 | what [pron] [was/were] [verb] last night | 5 |
|
