| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over the past [adj] months | 180 |
|
| 2 | over the past [num] months | 130 |
|
| 3 | over the past [det] months | 50 |
|
| 4 | over the past few months | 50 |
|
| 5 | over the past few months | 50 |
|
| 6 | over the past six months | 32 |
|
| 7 | over the past 12 months | 32 |
|
| 8 | over the past 12 months | 32 |
|
| 9 | over the past six months | 32 |
|
| 10 | over the past 18 months | 13 |
|
| 11 | over the past 18 months | 13 |
|
| 12 | over the past two months | 13 |
|
| 13 | over the past two months | 13 |
|
| 14 | over the past three months | 8 |
|
| 15 | over the past three months | 8 |
|
| 16 | over the past eighteen months | 7 |
|
| 17 | over the past eighteen months | 7 |
|
| 18 | over the past twelve months | 5 |
|
| 19 | over the past twelve months | 5 |
|
