| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period of [noun sg] | 351 |
|
| 2 | [prep] a [adj] period of [noun sg] | 351 |
|
| 3 | over a [adj] [noun] of [noun sg] | 183 |
|
| 4 | over a [adj] [noun sg] of [noun sg] | 183 |
|
| 5 | over a [adj] period [prep] [noun sg] | 122 |
|
| 6 | over a [adj] period [prep] [noun sg] | 122 |
|
| 7 | over a [adj] period of [noun sg] | 121 |
|
| 8 | over a [adj] period of [noun] | 119 |
|
| 9 | over [art] [adj] period of [noun sg] | 119 |
|
| 10 | over [art] [adj] period of [noun sg] | 119 |
|
| 11 | over a [adj] period of [noun sg] | 117 |
|
| 12 | over a [adj] period of [noun sg] | 114 |
|
| 13 | over a [adj] period of [noun sg] | 114 |
|
| 14 | over a [adj] period of [noun sg] | 114 |
|
