| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] a long [noun] | 99 |
|
| 2 | [prep] [adj] a long [noun sg] | 99 |
|
| 3 | [prep] [adj] a [adj] period | 26 |
|
| 4 | [prep] [adj] a [adj] period | 26 |
|
| 5 | [prep] [adj] a long period | 10 |
|
| 6 | [prep] [adj] a long period | 10 |
|
| 7 | [prep] [adj] a long period | 10 |
|
| 8 | [prep] [adj] [art] long period | 10 |
|
| 9 | [prep] [adj] a long period | 10 |
|
| 10 | [prep] [adj] [art] long period | 10 |
|
