| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun] [prep] a long period | 46 |
|
| 2 | [adj] [noun] over a long period | 44 |
|
| 3 | [adj] [noun] [prep] a long period | 43 |
|
| 4 | [adj] [noun sg] [prep] a long period | 39 |
|
| 5 | [adj] [noun pl] [prep] a long period | 16 |
|
| 6 | [adj] [noun] [prep] a longer period | 13 |
|
| 7 | [adj] [noun] for a long period | 8 |
|
| 8 | [det] [noun] [prep] a long period | 5 |
|
