| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a period of months | 10 |
|
| 2 | [noun sg] over a period of months | 8 |
|
| 3 | over a period of [adj] months | 32 |
|
| 4 | over a period of [num] months | 28 |
|
| 5 | over a period of two months | 6 |
|
| 6 | over a period of two months | 6 |
|
| 7 | over a period of six months | 5 |
|
| 8 | over a period of six months | 5 |
|
| 9 | over a period of months [conj] | 5 |
|
| 10 | over a period of months [coord] | 5 |
|
