| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [adj -er] period of | 12 |
|
| 2 | [noun sg] [prep] a [adj -er] period of | 10 |
|
| 3 | [verb] [prep] a [adj -er] period of | 7 |
|
| 4 | [vb pp] [prep] a [adj -er] period of | 6 |
|
| 5 | [prep] a [adv] [adj -er] period of | 7 |
|
| 6 | [prep] a [adv] [adj -er] period of | 7 |
|
| 7 | [prep] a much [adj -er] period of | 6 |
|
| 8 | [prep] a much [adj -er] period of | 6 |
|
| 9 | [prep] a [adj -er] period of [noun] | 22 |
|
| 10 | [prep] a [adj -er] period of [noun sg] | 21 |
|
| 11 | [prep] a [adj -er] period of time | 15 |
|
| 12 | [prep] a [adj -er] period of time | 15 |
|
| 13 | [prep] a [adj -er] period of [num] | 5 |
|
| 14 | [prep] a [adj -er] period of [adj] | 5 |
|
