| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] [adj] period of | 148 |
|
| 2 | over a [adj] period of | 134 |
|
| 3 | over a [adj] period of | 128 |
|
| 4 | over [art] long period of | 78 |
|
| 5 | over the [adj] period of | 14 |
|
| 6 | over the [adj] period of | 14 |
|
| 7 | over [art] prolonged period of | 8 |
|
| 8 | over [art] short period of | 7 |
|
| 9 | over [art] considerable period of | 7 |
|
| 10 | over an [adj] period of | 6 |
|
| 11 | over [art] given period of | 5 |
|
