| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] over a long period | 81 |
|
| 2 | [noun sg] over a long [noun sg] | 77 |
|
| 3 | [noun sg] over a longer [noun sg] | 17 |
|
| 4 | [noun sg] over a long time | 6 |
|
