| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [num] year period | 66 |
|
| 2 | [noun prp] [prep] a [num] year [noun sg] | 13 |
|
| 3 | [noun prp] [prep] a [num] year [noun] | 13 |
|
| 4 | [noun prp] [prep] a [num] [noun] period | 6 |
|
| 5 | [noun prp] [prep] a [num] [noun sg] period | 6 |
|
| 6 | [noun prp] [prep] a [adj] year period | 5 |
|
| 7 | [noun prp] [prep] a [num] year period | 5 |
|
| 8 | [noun prp] [prep] a [num] year period | 5 |
|
| 9 | [noun prp] [prep] [art] [num] year period | 5 |
|
| 10 | [noun prp] [prep] a [num] year period | 5 |
|
| 11 | [noun prp] [prep] [art] [num] year period | 5 |
|
| 12 | [noun prp] [prep] a [num] year period | 5 |
|
