| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] period of | 907 |
|
| 2 | [to-vb] [prep] [art] [adj] of | 94 |
|
| 3 | [to-vb] [prep] [art] [adj] period | 52 |
|
| 4 | [to-vb] [prep] [art] period of | 25 |
|
| 5 | [to-vb] [art] [adj] period of | 25 |
|
| 6 | [to-vb] [prep] [adj] period of | 5 |
|
