| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a period of [noun] | 296 |
|
| 2 | over a [noun sg] of year | 160 |
|
| 3 | over a [noun] of year | 160 |
|
| 4 | [prep] a period of year | 71 |
|
| 5 | [prep] a period of year | 71 |
|
| 6 | over [art] period of year | 62 |
|
| 7 | over a period of year | 62 |
|
| 8 | over a period [prep] year | 62 |
|
| 9 | over a period of year | 62 |
|
| 10 | over a period of year | 62 |
|
| 11 | over a period of year | 62 |
|
| 12 | over [art] period of year | 62 |
|
| 13 | over a period [prep] year | 62 |
|
