| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [noun pl] [prep] a period | 6 |
|
| 2 | [prep] [pos pn] [noun pl] [prep] a period | 6 |
|
| 3 | [prep] [pron] [noun pl] [prep] a period | 6 |
|
