| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [ex0] [was/were] a [noun] | 8023 |
|
| 2 | [was/were] a [n mass] [noun] | 75 |
|
| 3 | [ex0] [was/were] a [n mass] | 71 |
|
| 4 | [ex0] [was/were] [n mass] [noun] | 11 |
|
