| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [noun pl] [prep] a period | 6 |
|
| 2 | [prep] [pron] [noun pl] [prep] a period | 6 |
|
| 3 | [verb] [pron] [noun pl] [prep] a period | 5 |
|
| 4 | [pron] [adj] [noun pl] [prep] a period | 6 |
|
| 5 | [pron] [noun pl] [prep] a period [prep] | 13 |
|
| 6 | [pron] [noun pl] [prep] a period of | 13 |
|
| 7 | [pron] [noun pl] [prep] a period of | 13 |
|
| 8 | [pron] [noun pl] [prep] a period [prep] | 13 |
|
