| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [was/were] [prep] a [noun] | 1618 |
|
| 2 | [was/were] base [prep] a [noun] | 98 |
|
| 3 | [pron] [was/were] base [prep] [noun] | 68 |
|
| 4 | [pron] [was/were] base [prep] a | 27 |
|
