| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] | 1112 |
|
| 2 | [noun sg] a [adj] [prep] | 24 |
|
| 3 | [noun sg] a period [prep] | 13 |
|
| 4 | [noun sg] a [adj] period | 7 |
|
| 5 | [noun sg] [adj] period [prep] | 6 |
|
