| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] a [noun sg] | 32340 |
|
| 2 | [ex0] [was/were] a | 15053 |
|
| 3 | [ex0] [was/were] [noun sg] | 2460 |
|
| 4 | [ex0] a [noun sg] | 697 |
|
