| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [adj] period of | 223 |
|
| 2 | [noun] [prep] a [adj] period of | 211 |
|
| 3 | [noun sg] [prep] a [adj] period of | 164 |
|
| 4 | [noun] over a [adj] period of | 77 |
|
| 5 | [noun] over a [adj] period of | 77 |
|
| 6 | [noun] [prep] a long period of | 70 |
|
| 7 | [noun] for a [adj] period of | 66 |
|
| 8 | [noun] for a [adj] period of | 66 |
|
| 9 | [noun] [prep] a long period of | 62 |
|
| 10 | [noun pl] [prep] a [adj] period of | 48 |
|
| 11 | [noun] of a [adj] period of | 25 |
|
| 12 | [noun] of a [adj] period of | 25 |
|
| 13 | [noun] [prep] a short period of | 14 |
|
| 14 | [noun] after a [adj] period of | 13 |
|
| 15 | [noun] [prep] a fixed period of | 13 |
|
| 16 | [noun] [prep] a fixed period of | 13 |
|
| 17 | [noun] [prep] a short period of | 13 |
|
| 18 | [noun] after a [adj] period of | 13 |
|
| 19 | [noun] [prep] a [adj -er] period of | 12 |
|
| 20 | [noun] within a [adj] period of | 10 |
|
| 21 | [noun] within a [adj] period of | 10 |
|
| 22 | [noun] [prep] a prolonged period of | 10 |
|
| 23 | [noun] [prep] a prolonged period of | 10 |
|
| 24 | [noun] [prep] a specified period of | 9 |
|
| 25 | [noun] [prep] a continuous period of | 9 |
|
| 26 | [noun] [prep] a continuous period of | 9 |
|
| 27 | [noun] [prep] a specified period of | 9 |
|
| 28 | [noun] [prep] a longer period of | 8 |
|
| 29 | [noun] [prep] a particular period of | 8 |
|
| 30 | [noun] [prep] a particular period of | 8 |
|
