| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [adj] period and | 19 |
|
| 2 | over a [adj] period and | 18 |
|
| 3 | over a long period and | 11 |
|
| 4 | [prep] a long period and | 11 |
|
| 5 | [prep] a long period and | 11 |
|
| 6 | over a long [noun] and | 11 |
|
| 7 | over a long [noun sg] and | 11 |
|
| 8 | over a long period [coord] | 10 |
|
| 9 | over a long period and | 10 |
|
| 10 | over a long period [conj] | 10 |
|
| 11 | over [art] long period and | 10 |
|
| 12 | over a long period and | 10 |
|
| 13 | over a long period and | 10 |
|
| 14 | over [art] long period and | 10 |
|
| 15 | over a long period and | 10 |
|
