| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] a [adj] period [prep] | 219 |
|
| 2 | [verb] [prep] a [adj] period [prep] | 219 |
|
| 3 | [verb] [prep] a [adj] period [prep] | 208 |
|
| 4 | [verb] [prep] a [adj] period [prep] | 193 |
|
| 5 | [verb] [prep] a [adj] period of | 153 |
|
| 6 | [verb] [prep] a [adj] period of | 153 |
|
| 7 | [vb pp] [prep] a [adj] period [prep] | 140 |
|
| 8 | [verb] for a [adj] period [prep] | 95 |
|
| 9 | [verb] for a [adj] period [prep] | 95 |
|
| 10 | [verb] [prep] a long period [prep] | 42 |
|
| 11 | [verb] [prep] a long period [prep] | 38 |
|
| 12 | [verb] over a [adj] period [prep] | 28 |
|
| 13 | [verb] over a [adj] period [prep] | 28 |
|
| 14 | [verb] [prep] a short period [prep] | 27 |
|
| 15 | [verb] [prep] an [adj] period [prep] | 26 |
|
| 16 | [verb] [prep] a short period [prep] | 25 |
|
| 17 | [verb] [prep] a [adj] period in | 21 |
|
| 18 | [verb] [prep] a [adj] period in | 21 |
|
| 19 | [vb past] [prep] a [adj] period [prep] | 19 |
|
| 20 | [vb infin] [prep] a [adj] period [prep] | 15 |
|
| 21 | [v-ing] [prep] a [adj] period [prep] | 15 |
|
| 22 | [to-vb] [prep] a [adj] period [prep] | 14 |
|
| 23 | [verb] after a [adj] period [prep] | 13 |
|
| 24 | [verb] after a [adj] period [prep] | 13 |
|
| 25 | [verb] by a [adj] period [prep] | 12 |
|
| 26 | [verb] by a [adj] period [prep] | 12 |
|
| 27 | [verb] through a [adj] period [prep] | 11 |
|
| 28 | [verb] through a [adj] period [prep] | 11 |
|
| 29 | go [prep] a [adj] period [prep] | 11 |
|
| 30 | [verb] [prep] a [adj -er] period [prep] | 10 |
|
