| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [adj] period [prep] which | 63 |
|
| 2 | a [adj] period [prep] which | 36 |
|
| 3 | the [adj] period [prep] which | 30 |
|
| 4 | [art] [adj] period in which | 26 |
|
| 5 | [art] [adj] period during which | 22 |
|
| 6 | [art] [adj] period for which | 10 |
|
| 7 | [art] long period [prep] which | 9 |
|
| 8 | [art] [adj] period within which | 7 |
|
| 9 | [art] [adj -est] period [prep] which | 6 |
|
| 10 | [art] long period [prep] which | 6 |
|
| 11 | [art] short period [prep] which | 5 |
|
| 12 | [art] short period [prep] which | 5 |
|
| 13 | an [adj] period [prep] which | 5 |
|
