| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] a period [prep] [num] | 21 |
|
| 2 | [vb past] [adv] a period [prep] [num] | 6 |
|
| 3 | [v-ing] [adv] a period [prep] [num] | 5 |
|
| 4 | [adv] [prep] a period [prep] [num] | 30 |
|
| 5 | [adv] [prep] a period [prep] [num] | 30 |
|
| 6 | [adv] for a period [prep] [num] | 16 |
|
| 7 | [adv] for a period [prep] [num] | 16 |
|
| 8 | [adv] over a period [prep] [num] | 10 |
|
| 9 | [adv] over a period [prep] [num] | 10 |
|
| 10 | [adv] [verb] a period [prep] [num] | 5 |
|
| 11 | [adv] a period [prep] [num] [noun] | 19 |
|
| 12 | [adv] a period [prep] [num] [noun pl] | 17 |
|
| 13 | [adv] a period [prep] [num] year | 10 |
|
| 14 | [adv] a period [prep] [num] years | 9 |
|
| 15 | [adv] a period [prep] [num] months | 5 |
|
| 16 | [adv] a period [prep] [num] month | 5 |
|
