| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [adj] period [prep] [noun sg] | 129 |
|
| 2 | [prep] a long period [prep] [noun sg] | 128 |
|
| 3 | over a long period [prep] [noun] | 84 |
|
| 4 | over a long period [prep] [noun sg] | 80 |
|
| 5 | over a long [noun sg] [prep] [noun sg] | 80 |
|
| 6 | over [art] long period [prep] [noun sg] | 80 |
|
| 7 | over [art] long period [prep] [noun sg] | 80 |
|
| 8 | over a long [noun] [prep] [noun sg] | 80 |
|
| 9 | over a long period [prep] [noun sg] | 80 |
|
