| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] | 1182 |
|
| 2 | [verb] a [adj] [prep] | 1131 |
|
| 3 | [verb] a period [prep] | 346 |
|
| 4 | [verb] a [adj] period | 247 |
|
| 5 | [verb] [adj] period [prep] | 42 |
|
