| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [noun prp] [vb past] [be] that | 8 |
|
| 2 | what [noun prp] [vb past] [be] [that] | 8 |
|
| 3 | what [noun prp] [vb past] be [that] | 8 |
|
| 4 | what [noun prp] [vb past] [was/were] [that] | 6 |
|
| 5 | what [noun prp] [vb past] was [that] | 6 |
|
