| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun sg] [prep] a long period | 34 |
|
| 2 | [adj] [noun sg] over a long period | 30 |
|
| 3 | [adj] [noun sg] [prep] a long period | 29 |
|
| 4 | [adj] [noun sg] [prep] a longer period | 10 |
|
| 5 | [adj] [noun sg] for a long period | 5 |
|
