| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] | 1112 |
|
| 2 | [adj] period [prep] [noun sg] | 1020 |
|
| 3 | a period [prep] [noun sg] | 813 |
|
| 4 | a [adj] [prep] [noun sg] | 298 |
|
| 5 | a [adj] period [noun sg] | 21 |
|
