| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] | 1112 |
|
| 2 | [adj] period [prep] the | 376 |
|
| 3 | a [adj] [prep] the | 213 |
|
| 4 | a period [prep] the | 53 |
|
| 5 | a [adj] period the | 12 |
|
