| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [conj] | 130 |
|
| 2 | a [adj] period [coord] | 85 |
|
| 3 | a [adj] period [subord] | 62 |
|
| 4 | a [adj] period and | 58 |
|
| 5 | a [adj] period and | 58 |
|
| 6 | a long period [conj] | 35 |
|
| 7 | a [adj -er] period [conj] | 29 |
|
| 8 | a short period [conj] | 25 |
|
| 9 | a [adj] period than | 21 |
|
| 10 | a [adj] period than | 21 |
|
| 11 | a short period [conj] | 19 |
|
| 12 | a longer period [conj] | 19 |
|
| 13 | a long period [conj] | 16 |
|
| 14 | a [adj] period or | 15 |
|
| 15 | a [adj] period or | 15 |
|
| 16 | a [adj] period as | 13 |
|
| 17 | a [adj] period as | 13 |
|
| 18 | a [adj] period that | 12 |
|
| 19 | a [adj] period that | 12 |
|
| 20 | a [adj] period [that] | 12 |
|
| 21 | a [adj] period but | 11 |
|
| 22 | a [adj] period but | 11 |
|
| 23 | a [adj] period before | 7 |
|
| 24 | a limited period [conj] | 7 |
|
| 25 | a [adj] period before | 7 |
|
| 26 | a limited period [conj] | 7 |
|
| 27 | a certain period [conj] | 6 |
|
| 28 | a certain period [conj] | 6 |
|
| 29 | a particular period [conj] | 6 |
|
| 30 | a particular period [conj] | 6 |
|
