| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] period [prep] [noun] | 1640 |
|
| 2 | [art] long period [prep] | 288 |
|
| 3 | long period [prep] [noun] | 226 |
|
| 4 | [art] long [prep] [noun] | 10 |
|
