| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of [noun] [prep] a [adj] period | 67 |
|
| 2 | of [noun sg] [prep] a [adj] period | 42 |
|
| 3 | of [noun] over a [adj] period | 35 |
|
| 4 | of [noun pl] [prep] a [adj] period | 23 |
|
| 5 | of [noun] [prep] a long period | 22 |
|
| 6 | of [noun] for a [adj] period | 21 |
|
| 7 | of [noun] [prep] a long period | 18 |
|
| 8 | of [noun] [prep] a short period | 9 |
|
| 9 | of [noun] [prep] a [adj -er] period | 8 |
|
| 10 | of [noun] [prep] a short period | 6 |
|
| 11 | of [noun] after a [adj] period | 5 |
|
| 12 | of [noun] within a [adj] period | 5 |
|
| 13 | of [noun prp] [prep] a [adj] period | 5 |
|
| 14 | of [n mass] [prep] a [adj] period | 5 |
|
