| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [coord] [prep] | 17 |
|
| 2 | a [adj] period [coord] [prep] | 16 |
|
| 3 | a [adj] period and [prep] | 10 |
|
| 4 | a [adj] period or [prep] | 6 |
|
