| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] in a [adj] period | 8 |
|
| 2 | [be] [vb pp] in a [adj] period | 8 |
|
| 3 | [noun] [vb pp] in a [adj] period | 6 |
|
| 4 | [be] [vb pp] in a [adj] period | 5 |
|
| 5 | be [vb pp] in a [adj] period | 5 |
|
| 6 | [vb pp] in a [adj] period [prep] | 6 |
|
| 7 | [vb pp] in a [adj] period of | 6 |
|
| 8 | [vb pp] in a [adj] period [prep] | 6 |
|
| 9 | [vb pp] in a [adj] period of | 6 |
|
