| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [noun] [prep] a long period | 27 |
|
| 2 | [art] [noun sg] [prep] a long period | 23 |
|
| 3 | the [noun] [prep] a long period | 21 |
|
| 4 | the [noun] [prep] a long period | 21 |
|
| 5 | [art] [noun] for a long period | 10 |
|
| 6 | [art] [noun] of a long period | 9 |
|
| 7 | [art] [noun] over a long period | 8 |
|
| 8 | a [noun] [prep] a long period | 5 |
|
