| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [num] year [noun] | 770 |
|
| 2 | [art] [num] year [noun sg] | 741 |
|
| 3 | [art] [num] [noun] period | 375 |
|
| 4 | [art] [num] [noun sg] period | 368 |
|
| 5 | [art] [adj] year period | 200 |
|
| 6 | [art] [num] year period | 196 |
|
| 7 | [art] [num] year period | 196 |
|
