| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [noun sg] [prep] a | 4141 |
|
| 2 | [noun] [noun sg] [prep] a period | 61 |
|
| 3 | a [noun sg] [prep] a period | 40 |
|
| 4 | a [noun] [prep] a period | 40 |
|
