| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj -er] [conj] | 435 |
|
| 2 | [prep] a [adj -er] period | 146 |
|
| 3 | [prep] a period [conj] | 49 |
|
| 4 | a [adj -er] period [conj] | 29 |
|
