| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] which | 36 |
|
| 2 | a long [noun sg] [prep] which | 29 |
|
| 3 | a long [noun] [prep] which | 29 |
|
| 4 | [art] long period [prep] which | 9 |
|
| 5 | [art] long period [prep] which | 9 |
|
| 6 | a long period [prep] [pron] | 9 |
|
| 7 | a long period [prep] which | 7 |
|
| 8 | a long period [prep] [Wh det] | 7 |
|
| 9 | a long period [prep] which | 7 |
|
| 10 | a long period [prep] which | 7 |
|
| 11 | a long period [prep] which | 7 |
|
