| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a long [noun] [prep] | 2905 |
|
| 2 | a [adj] period [prep] | 1333 |
|
| 3 | a [adj] period [prep] | 1253 |
|
| 4 | [art] long period [prep] | 253 |
|
| 5 | a long period [prep] | 245 |
|
| 6 | a long period [prep] | 216 |
|
