| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] was a [noun] | 1540 |
|
| 2 | [det] was a [noun sg] | 1491 |
|
| 3 | [det] was [art] period | 38 |
|
| 4 | [det] was [art] period | 38 |
|
| 5 | [adj] was a period | 29 |
|
| 6 | [det] [be] a period | 25 |
|
| 7 | [det] be a period | 25 |
|
| 8 | [det] [was/were] a period | 18 |
|
| 9 | [det] was a period | 18 |
|
| 10 | [det] was a period | 18 |
|
