| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] the [num] year period | 60 |
|
| 2 | [prep] the [num] year period | 60 |
|
| 3 | over the [num] year period | 23 |
|
| 4 | over the [num] year period | 23 |
|
| 5 | during the [num] year period | 13 |
|
| 6 | during the [num] year period | 13 |
|
| 7 | of the [num] year period | 9 |
|
| 8 | in the [num] year period | 9 |
|
| 9 | in the [num] year period | 9 |
|
| 10 | of the [num] year period | 9 |
|
| 11 | the [adj] [num] year period | 11 |
|
| 12 | the [num] year period [prep] | 13 |
|
| 13 | the [num] year period [verb] | 13 |
|
| 14 | the [num] year period [prep] | 13 |
|
| 15 | the [num] year period of | 5 |
|
| 16 | the [num] year period of | 5 |
|
| 17 | the [num] year period [vb -s] | 5 |
|
