| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [prep] a [noun] [prep] | 5005 |
|
| 2 | [pron] [prep] [art] period [prep] | 36 |
|
| 3 | [pron] [prep] [art] period [prep] | 36 |
|
| 4 | [pron] [prep] a period [prep] | 23 |
|
| 5 | [pron] [prep] a period [prep] | 23 |
|
