| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] | 1182 |
|
| 2 | [vb pp] a [adj] [prep] | 132 |
|
| 3 | [vb pp] a period [prep] | 41 |
|
| 4 | [vb pp] a [adj] period | 25 |
|
| 5 | [vb pp] [adj] period [prep] | 12 |
|
