| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [prep] a long period | 36 |
|
| 2 | to [noun] [prep] a [adj] period | 17 |
|
| 3 | to [noun] [prep] a [adj] period | 17 |
|
| 4 | to [noun] [prep] a long [noun sg] | 14 |
|
| 5 | to [noun] [prep] a long [noun] | 14 |
|
| 6 | to [noun] [prep] [art] long period | 5 |
|
| 7 | to [noun] [prep] a long period | 5 |
|
| 8 | to [noun] [prep] a long period | 5 |
|
| 9 | to [noun] [prep] a long period | 5 |
|
| 10 | to [noun] [prep] [art] long period | 5 |
|
| 11 | to [noun] [prep] a long period | 5 |
|
