| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period of | 514 |
|
| 2 | [prep] a [adj] period of | 514 |
|
| 3 | over a [adj] [noun] of | 339 |
|
| 4 | over a [adj] [noun sg] of | 336 |
|
| 5 | over a [adj] period [prep] | 166 |
|
| 6 | over a [adj] period [prep] | 166 |
|
| 7 | over [art] [adj] period of | 148 |
|
| 8 | over [art] [adj] period of | 148 |
|
| 9 | over a [adj] period of | 137 |
|
| 10 | over a [adj] period of | 134 |
|
| 11 | over a [adj] period of | 128 |
|
| 12 | over a [adj] period of | 128 |
|
| 13 | over a [adj] period of | 128 |
|
