| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | an [adj] [noun] [prep] a [noun] | 1447 |
|
| 2 | an [adj] [noun] [prep] a [noun sg] | 1373 |
|
| 3 | [art] [adj] [noun] [prep] a period | 60 |
|
| 4 | [art] [adj] [noun] [prep] a period | 60 |
|
| 5 | a [adj] [noun] [prep] a period | 34 |
|
| 6 | an [adj] [noun] [prep] [art] period | 20 |
|
| 7 | an [adj] [noun] [prep] a period | 7 |
|
| 8 | an [adj] [noun] [prep] a period | 7 |
|
