| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adj] [prep] a long period | 5 |
|
| 2 | [be] [adj] [prep] a long period | 5 |
|
| 3 | [adj] [noun] [prep] a long period | 43 |
|
| 4 | [adj] [noun sg] [prep] a long period | 29 |
|
| 5 | [adj] [noun pl] [prep] a long period | 13 |
|
