| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] period of | 907 |
|
| 2 | [conj] [prep] [art] [adj] period | 206 |
|
| 3 | [conj] [prep] [art] [adj] of | 138 |
|
| 4 | [conj] [prep] [art] period of | 82 |
|
| 5 | [conj] [art] [adj] period of | 76 |
|
| 6 | [conj] [prep] [adj] period of | 9 |
|
