| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] a [noun sg] | 32340 |
|
| 2 | [Wh det] a [noun sg] | 4564 |
|
| 3 | [Wh det] [was/were] a | 869 |
|
| 4 | [Wh det] [was/were] [noun sg] | 242 |
|
