| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [noun] [prep] a [adj] period | 111 |
|
| 2 | [noun] [noun] [prep] a [adj] period | 107 |
|
| 3 | [noun] [noun] [prep] a long [noun] | 106 |
|
| 4 | [noun] [noun] [prep] a long [noun sg] | 105 |
|
| 5 | [noun] [noun] [prep] a long period | 20 |
|
| 6 | [noun] [noun] [prep] a long period | 18 |
|
| 7 | [noun] [noun] [prep] a long period | 18 |
|
| 8 | [noun] [noun] [prep] [art] long period | 18 |
|
