| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] a long [noun] [prep] | 28 |
|
| 2 | [adj] a long [noun sg] [prep] | 28 |
|
| 3 | [adj] a [adj] period [prep] | 14 |
|
| 4 | [adj] a long period [prep] | 6 |
|
| 5 | [adj] [art] long period [prep] | 6 |
|
