| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] which | 5978 |
|
| 2 | [prep] a [noun sg] which | 5915 |
|
| 3 | [prep] [art] period which | 27 |
|
| 4 | [prep] [art] period which | 27 |
|
| 5 | [prep] a period [pron] | 19 |
|
| 6 | [prep] a period which | 12 |
|
| 7 | [prep] a period which | 12 |
|
| 8 | [prep] a period which | 12 |
|
