| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [adj] period [prep] | 180 |
|
| 2 | [verb] a [adj] period [prep] | 159 |
|
| 3 | [verb] a [adj] period of | 135 |
|
| 4 | [vb past] a [adj] period [prep] | 43 |
|
| 5 | [v-ing] a [adj] period [prep] | 32 |
|
| 6 | [verb] a long period [prep] | 26 |
|
| 7 | [to-vb] a [adj] period [prep] | 23 |
|
| 8 | [vb base] a [adj] period [prep] | 23 |
|
| 9 | have a [adj] period [prep] | 21 |
|
| 10 | [vb pp] a [adj] period [prep] | 21 |
|
| 11 | [vb -s] a [adj] period [prep] | 20 |
|
| 12 | [verb] a long period [prep] | 19 |
|
| 13 | [vb infin] a [adj] period [prep] | 18 |
|
| 14 | [verb] a brief period [prep] | 18 |
|
| 15 | [verb] a [adj -er] period [prep] | 18 |
|
| 16 | follow a [adj] period [prep] | 17 |
|
| 17 | [verb] a brief period [prep] | 17 |
|
| 18 | [verb] a [adj] period in | 16 |
|
| 19 | [verb] a short period [prep] | 11 |
|
| 20 | [verb] a short period [prep] | 10 |
|
| 21 | following a [adj] period [prep] | 9 |
|
| 22 | [verb] a further period [prep] | 9 |
|
| 23 | [verb] a far period [prep] | 9 |
|
| 24 | spend a [adj] period [prep] | 8 |
|
| 25 | enjoy a [adj] period [prep] | 8 |
|
| 26 | [verb] a [adj] period during | 7 |
|
| 27 | [verb] a lengthy period [prep] | 7 |
|
| 28 | [verb] a transitional period [prep] | 7 |
|
| 29 | [verb] a longer period [prep] | 7 |
|
| 30 | give a [adj] period [prep] | 7 |
|
