| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] year [noun] | 793 |
|
| 2 | [prep] [art] [adj] [noun] period | 738 |
|
| 3 | [prep] [art] [adj] [noun sg] period | 713 |
|
| 4 | [prep] [art] [adj] year [noun sg] | 630 |
|
| 5 | [prep] [art] [adj] year period | 173 |
|
| 6 | [prep] [art] [adj] year period | 173 |
|
