| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun pl] [prep] a [adj] period | 66 |
|
| 2 | [adj] [noun pl] [prep] a [adj] period | 60 |
|
| 3 | [adj] [noun] [prep] a long period | 33 |
|
| 4 | [adj] [noun pl] [prep] a long [noun] | 32 |
|
| 5 | [adj] [noun pl] [prep] a long [noun sg] | 31 |
|
| 6 | [adj] [noun pl] [prep] a long period | 13 |
|
| 7 | [adj] [noun pl] [prep] a long period | 11 |
|
| 8 | [adj] [noun pl] [prep] a long period | 8 |
|
| 9 | [adj] [noun pl] [prep] [art] long period | 8 |
|
