| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] a [adj] period | 55 |
|
| 2 | [v-ing] a [adj] period | 41 |
|
| 3 | [vb base] a [adj] period | 32 |
|
| 4 | have a [adj] period | 29 |
|
| 5 | [vb -s] a [adj] period | 27 |
|
| 6 | [to-vb] a [adj] period | 26 |
|
| 7 | [verb] a long period | 25 |
|
| 8 | [vb pp] a [adj] period | 23 |
|
| 9 | follow a [adj] period | 19 |
|
| 10 | [vb infin] a [adj] period | 18 |
|
| 11 | [verb] a brief period | 18 |
|
| 12 | [verb] a short period | 14 |
|
| 13 | cover a [adj] period | 13 |
|
| 14 | spend a [adj] period | 10 |
|
| 15 | following a [adj] period | 9 |
|
| 16 | followed a [adj] period | 8 |
|
| 17 | [verb] a transitional period | 8 |
|
| 18 | have a [adj] period | 8 |
|
| 19 | enter a [adj] period | 7 |
|
| 20 | [verb] a lengthy period | 7 |
|
| 21 | span a [adj] period | 7 |
|
| 22 | take a [adj] period | 6 |
|
| 23 | [verb] a new period | 6 |
|
| 24 | enjoy a [adj] period | 6 |
|
| 25 | give a [adj] period | 6 |
|
| 26 | had a [adj] period | 5 |
|
| 27 | [verb] a fallow period | 5 |
|
| 28 | serve a [adj] period | 5 |
|
| 29 | to have a [adj] period | 5 |
|
| 30 | represent a [adj] period | 5 |
|
